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primidone - medtigo

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primidone

Brand Name :

Mysoline

Synonyms :

primidone

Class :

Barbiturate anticonvulsants





No data available for drug.

Actions and spectrum

  • Anticonvulsant activity: primidone acts as an anticonvulsant by increasing the threshold for seizure activity in the brain. It is thought to achieve this by enhancing the activity of GABA (gamma-aminobutyric acid), which is an inhibitory neurotransmitter in the brain.
  • Sedative and hypnotic effects: primidone can cause sedation and drowsiness, especially when it is first started or when the dosage is increased. This can make it useful in the treatment of certain types of epilepsy, such as nocturnal seizures.
  • Treatment of essential tremor: primidone is also used in the treatment of essential tremor, which is a movement disorder that causes rhythmic shaking of the hands, head, or voice. The exact mechanism of action for primidone in essential tremors is not well understood.
  • Wide spectrum of efficacy: primidone is effective in treating a broad spectrum of seizures, including tonic-clonic seizures, partial seizures, myoclonic seizures, and absence seizures.
  • Side effects: primidone can cause a range of side effects, including drowsiness, dizziness, ataxia, headache, nausea, and vomiting. Long-term use of the drug can lead to cognitive impairment and mood changes.
  • Dosage and administration: primidone is typically administered orally in tablet form, with dosages ranging from 125mg to 750mg per day, depending on the patient’s age, weight, and the severity of the condition being treated. The medication is usually started at a low dose and gradually increased to achieve the desired therapeutic effect.

DRUG INTERACTION

primidone

&

  • interferon beta 1b
  • tetracaine/oxymetazoline intranasal
  • benzocaine oropharyngeal
  • benzalkonium chloride/menthol/petrolatum topical
  • inamrinone
  • alpha 1 proteinase inhibitor
  • potassium bicarbonate/potassium citrate
  • potassium phosphate/sodium acid phosphate
  • asparaginase Erwinia chrysanthemi recombinant
  • motixafortide
  • pegloticase
  • etesevimab
  • Rho(D) immune globulin
  • tetanus immune globulin (TIG)
  • reltecimod (pending FDA approval)
  • avasopasem
  • trimethoprim/polymyxin B ophthalmic
  • naphazoline ophthalmic
  • sulfacetamide topical
  • sirolimus intravitreal (pending FDA approval)
  • sirolimus protein bound
  • sirolimus topical
  • glycopyrronium tosylate topical
  • sofpironium
  • olmesartan, amlodipine and hydrochlorothiazide
  • dovitinib (Pending FDA Approval)
  • epinephrine inhaled
  • quizartinib (Pending FDA Approval)
  • ranibizumab intravitreal injection
  • sodium hyaluronate
  • bacitracin and lidocaine topical
  • brimonidine topical
  • benzoyl peroxide and tretinoin topical
  • talquetamab
  • betrixaban
  • acetaminophen/caffeine/pyrilamine
  • fentanyl transmucosal
  • bacitracin topical
  • buprenorphine,long-acting injection
  • buprenorphine buccal
  • nalmefene intranasal
  • sulbactam/durlobactam
  • metronidazole topical 
  • daratumumab/hyaluronidase
  • glofitamab
  • rituximab-hyaluronidase
  • drospirenone/ethinyl estradiol/levomefolate
  • loncastuximab tesirine
  • ingenol mebutate topical
  • momelotinib
  • trastuzumab/deruxtecan
  • trastuzumab/hyaluronidase
  • trastuzumab duocarmazine
  • lifileucel
  • umbralisib
  • eflornithine/sulindac
  • cytarabine/daunorubicin liposomal
  • doxorubicin liposomal
  • epcoritamab
  • lanadelumab  
  • esomeprazole/naproxen 
  • terbinafine topical
  • ravulizumab
  • clotrimazole topical
  • choline magnesium trisalicylate
  • tacrolimus ointment
  • mechlorethamine topical
  • donislecel
  • pozelimab (Pending FDA Approval)
  • rabies immune globulin, human (RIG)
  • melphalan flufenamide
  • sintilimab (Pending FDA Approval)
  • oportuzumab monatox (Pending FDA Approval)
  • sotorasib
  • irinotecan liposomal
  • sulfur topical
  • silver sulfadiazine
  • capsaicin transdermal
  • sutimlimab
  • tretinoin topical
  • acetaminophen rectal
  • menthol topical
  • naftifine
  • oatmeal, colloidal topical
  • oxiconazole
  • methylsalicylate/menthol topical
  • C1 inhibitor human
  • lifitegrast ophthalmic
  • prednisolone/sulfacetamide ophthalmic
  • mannitol inhalation
  • ofloxacin otic
  • petrolatum & mineral oil topical
  • clascoterone topical
  • gefapixant (Pending FDA Approval)
  • colesevelam
  • technetium Tc 99m succimer
  • nebivolol/valsartan
  • ciprofloxacin/fluocinolone acetonide, otic
  • finafloxacin otic
  • magnesium hydroxide/mineral oil
  • phenylephrine/mineral oil/petrolatum rectal
  • carbamide peroxide oral
  • atropine ophthalmic
  • sodium sulfacetamide/sulfur
  • sulfacetamide ophthalmic
  • lucinactant
  • benzonatate
  • besifloxacin ophthalmic
  • benzhydrocodone/acetaminophen
  • beractant
  • trimagnesium citrate anhydrous
  • vitamin b2
  • carbamide peroxide otic
  • mineral oil topical
  • ethyl alcohol intranasal
  • boric acid/alcohol otic
  • absorbable gelatin compressed sponge, USP
  • absorbable gelatin sponge, USP
  • vincristine liposomal
  • technetium Tc 99m albumin aggregated injection
  • metaproterenol
  • budesonide inhaled/formoterol/glycopyrrolate inhaled
  • epinephrine racemic
  • umeclidinium bromide/vilanterol inhaled
  • indacaterol, inhaled/glycopyrrolate inhaled
  • betaine  
  • laronidase 
  • estrogens esterified/methyltestosterone            
  • cerliponase alfa
  • ertugliflozin/sitagliptin
  • hawthorn
  • shepherd’s purse
  • thiamine
  • naphazoline/glycerin ophthalmic
  • oxymetazoline ophthalmic
  • dorzolamide
  • dexamethasone intraocular
  • dexamethasone/ciprofloxacin
  • dexamethasone ophthalmic
  • metipranolol ophthalmic
  • timolol ophthalmic
  • boron
  • fezolinetant
  • pegunigalsidase alfa-iwxj
  • biotin
  • pantothenic acid
  • silicon
  • sodium acid phosphate
  • hypochlorous acid topical
  • methenamine/sodium acid phosphate
  • aviptadil 
  • bremelanotide
  • glucagon intranasal
  • metformin and repaglinide
  • bai ji
  • pau d’arco
  • juzentaihoto
  • mistletoe
  • quercetin
  • rosemary
  • sheng di huang
  • chasteberry
  • maitake
  • grapefruit
  • lentinan
  • juniper
  • nettle
  • parsley
  • rose hips
  • tongkat ali
  • horny goat weed
  • damiana
  • yohimbe
  • insulin NPH
  • aprocitentan
  • noni Juice
  • sodium iodide I-131
  • green tea
  • sea cucumber
  • wheat germ extract
  • fenofibrate micronized 
  • rogisen
  • danshen
  • lutein
  • witch hazel
  • dextroamphetamine transdermal
  • amphetamine/dextroamphetamine
  • hoodia
  • kolanut
  • boswellia
  • opuntia ficus indica
  • lavender
  • nadh
  • tea tree oil
  • metformin/sitagliptin 
  • dapagliflozin/ metformin/saxagliptin  
  • antihemophilic factor recombinant
  • inclisiran
  • bempedoic acid/ezetimibe
  • volanesorsen  
  • omega 3 carboxylic acids
  • pericyazine
  • levomepromazine (methotrimeprazine)
  • betaxolol ophthalmic
  • respiratory syncytial virus vaccine, adjuvanted
  • phenylephrine hydrochloride and tropicamide ophthalmic
  • alirocumab
  • neomycin/polymyxin B/gramicidin ophthalmic
  • factor IX
  • gentamicin topical
  • ansofaxine (Pending FDA Approval)
  • zuranolone (Pending FDA Approval)
  • factor IX, recombinant
  • factor IX complex
  • factor XIII A-subunit, recombinant
  • factor X, human
  • mesalamine rectal
  • etrasimod
  • anti-inhibitor coagulant complex
  • factor IX, recombinant/albumin fusion protein
  • fibrinogen, human
  • aminocaproic acid
  • metyrosine
  • nonoxynol-9 vaginal
  • progesterone intravaginal gel
  • ipecac syrup
  • botulinum antitoxin, heptavalent
  • pentetate calcium trisodium
  • crotalidae polyvalent immune FAB (ovine)
  • dehydrated alcohol injection 
  • gold sodium thiomalate (Discontinued)
  • lactic acid/citric acid/potassium bitartrate vaginal
  • von Willebrand factor, recombinant
  • luspatercept
  • digoxin immune FAB (Antidote)
  • crotalidae immune FAB (equine)
  • magnesium (Antidote)
  • pyridoxine (Antidote)
  • edetate calcium disodium
  • albumin IV
  • nitroglycerin sublingual
  • obiltoxaximab
  • anthrax immune globulin
  • nitroglycerin topical
  • dextrose
  • nesiritide
  • estradiol vaginal
  • bazedoxifene/conjugated estrogens
  • botulism immune globulin iv
  • amoxicillin/omeprazole/rifabutin
  • synthetic human angiotensin II
  • nitroglycerin IV
  • nitroglycerin translingual
  • nitroprusside sodium
  • tetrahydrozoline/zinc sulfate/hypromellose ophthalmic
  • sodium citrate/citric acid
  • pemetrexate
  • methicillin
  • plasminogen 
  • acai
  • american ginseng
  • cordyceps
  • tramadol/acetaminophen
  • belladonna alkaloids/phenobarbital
  • erythromycin topical/benzoyl peroxide
  • glucosamine sulfate
  • panax ginseng (suppl/herb)
  • tolnaftate
  • sulopenem etzadroxil/probenecid (Pending FDA Approval)
  • sulfur hexafluoride
  • sotrovimab
  • arbaclofen
  • rifampin/isoniazid
  • clindamycin /tretinoin topical
  • benzoyl peroxide/clindamycin topical
  • apremilast
  • antivenins, centuroides (scorpion)
  • bamlanivimab and etesevimab
  • vilobelimab
  • gadobenate
  • pentosan polysulfate sodium
  • methylsalicylate/menthol/camphor topical
  • antivenin, black widow spider
  • benzoyl peroxide and hydrocortisone
  • clindamycin topical
  • isometheptene, dichloralphenazone and acetaminophen
  • acetaminophen and phenyltoloxamine
  • erythromycin topical
  • erythromycin ophthalmic
  • alpha hydroxy acids, topical
  • buprenorphine transdermal
  • butalbital/acetaminophen/caffeine
  • buprenorphine/samidorphan
  • buprenorphine subdermal implant
  • celecoxib/tramadol
  • drospirenone/ethinyl estradiol
  • resorcinol/sulfur
  • eflornithine
  • rifampin/isoniazid/pyrazinamide
  • tofersen
  • devil’s claw
  • ticarcillin/clavulanate
  • atropine/pralidoxime
  • aprepitant
  • suramin
  • phenelzine 
  • artichoke
  • american dogwood
  • attapulgite
  • atlantic cedar
  • axalimogene filolisbac
  • sodium thiosulfate & sodium nitrite
  • ataluren
  • omidubicel-onlv
  • capsicum
  • ginger
  • cryoprecipitate
  • bictegravir/emtricitabine/tenofovir DF
  • emtricitabine/tenofovir DF
  • fo-ti
  • siberian ginseng
  • granulocytes
  • zinc substituted heme C
  • zinc trihydroxide
  • ashwagandha 
  • cat’s claw
  • glandular products
  • SAMe
  • shark cartilage
  • altovis
  • feverfew
  • horse chestnut
  • magnesium aspartate
  • octacosanol
  • pleurisy root
  • star anise
  • butterbur
  • elderberry
  • licorice (Suppl/herb)
  • aconite
  • pentetate zinc trisodium
  • menthol topical/zinc oxide topical
  • corn-starch/kaolin/zinc oxide topical
  • 5-htp
  • butcher’s broom
  • articulin
  • bearberry
  • goldenrod
  • progesterone, natural
  • black cohosh
  • wild yam
  • cranberry
  • dong quai
  • phytoestrogens
  • norethindrone
  • false Unicorn Root
  • raspberry Leaf
  • asafoetida
  • turmeric
  • dehydroepiandrosterone (DHEA)
  • hyaluronan
  • aliskiren/amlodipine
  • octreotide (Antidote)
  • tranexamic acid injection
  • duocal
  • neocate infant formula
  • pediatric Eo28
  • aloe
  • red clover
  • propolis
  • androstenedione
  • heartsease
  • comfrey
  • bilberry
  • chamomile
  • eyebright
  • calendula
  • sage
  • yucca
  • polypody
  • odevixibat
  • vinpocetine
  • olanzapine/samidorphan
  • creatine
  • yerba mate
  • spesolimab
  • azficel-T
  • tiludronate
  • estetrol and drospirenone
  • pseudoephedrine/fexofenadine
  • lincomycin
  • neomycin oral
  • fluocinolone acetonide, otic
  • tretinoin/ hydroquinone/ fluocinolone
  • halobetasol topical
  • hydrocortisone/​iodoquinol
  • penicillin G procaine /penicillin G benzathine
  • hydrocortisone probutate topical
  • colistin/neomycin/hydrocortisone/thonzonium otic
  • ebola zaire vaccine
  • hepatitis a/​b vaccine
  • vibegron
  • lindane
  • nystatin topical
  • respiratory syncytial virus (RSV) vaccine
  • chikungunya vaccine
  • tenecteplase
  • reteplase
  • anthrax vaccine adsorbed, adjuvanted
  • meningococcal ABCWY pentavalent vaccine
  • eculizumab
  • cholestyramine
  • tinzaparin
  • taurolidine/​citrate/​heparin
  • protein C concentrate
  • antithrombin alfa
  • antithrombin III
  • multivitamins, vision
  • ibuprofen/​chlorpheniramine/​pseudoephedrine
  • acetaminophen/ibuprofen
  • ibuprofen/pseudoephedrine
  • paclitaxel protein-bound
  • acetic acid vaginal
  • acetic acid otic
  • hydrocodone/ ibuprofen
  • methyl salicylate / isopropanol/ citronellyl acetate/ citric acid
  • ibuprofen and phenylephrine
  • acetylcysteine (Antidote)
  • iron/​folic acid/​vitamin/​mineral
  • iobenguane I-131
  • dolutegravir/rilpivirine
  • chlorhexidine topical
  • chlorhexidine oral
  • thyroid desiccated
  • proparacaine ophthalmic
  • podophyllum resin
  • phendimetrazine
  • phenoxybenzamine
  • polidocanol
  • phentermine and topiramate
  • piflufolastat F18
  • piperacillin/tazobactam
  • prednisolone and gentamicin ophthalmic
  • promethazine and codeine
  • poractant alfa
  • protamine sulfate
  • aflibercept intravitreal
  • prednicarbate
  • promethazine/dextromethorphan
  • codeine, phenylephrine, and promethazine
  • potassium phosphate
  • glatiramer acetate
  • gentamicin (Ophthalmic)
  • leniolisib
  • rezafungin
  • fluorometholone
  • dalfampridine
  • hydrocortisone topical 
  • empagliflozin and linagliptin
  • triamcinolone topical
  • minocycline topical
  • minocycline dental
  • ketotifen ophthalmic
  • darunavir and cobicistat
  • lidocaine topical
  • neomycin/polymyxin B/bacitracin/lidocaine (OTC)
  • lidocaine/ hydrocortisone
  • lidocaine anesthetic
  • lidocaine ophthalmic
  • lidocaine/tetracaine
  • desonide
  • dabigatran
  • fexofenadine
  • fluoride
  • decitabine and cedazuridine
  • dasiglucagon
  • hydroxypropyl cellulose ophthalmic
  • epoetin alfa
  • ibritumomab tiuxetan
  • trimethobenzamide
  • dexamethasone/ tobramycin
  • tafasitamab
  • valacyclovir
  • mebendazole
  • levoleucovorin
  • flaxseed
  • germanium
  • glutathione
  • lycopene
  • pygeum
  • horseradish
  • ziv-aflibercept
  • micafungin
  • trofinetide
  • taliglucerase alfa
  • tildrakizumab
  • sulopenem (Pending FDA Approval)
  • thyrotropin alfa
  • birch
  • thrombin, topical
  • tivozanib
  • tafluprost
  • methohexital
  • urea and hydrocortisone
  • unoprostone ophthalmic
  • trihexyphenidyl
  • ezetimibe
  • evolocumab
  • trifluridine and tipiracil
  • methenamine
  • misoprostol
  • miltefosine
  • rimantadine
  • maralixibat
  • coenzyme Q10
  • chlorella
  • garlic
  • forskolin
  • zavegepant
  • menotropins
  • margetuximab
  • meprobamate
  • melarsoprol
  • evening primrose oil
  • lemongrass
  • molindone
  • fenugreek
  • phytosterols
  • red yeast rice
  • uridine triacetate
  • tropicamide
  • incobotulinumtoxinA
  • Grape Seed Extract
  • carbachol ophthalmic
  • cosyntropin
  • cyclopentolate and phenylephrine
  • carteolol ophthalmic
  • pentazocine/naloxone
  • pentazocine/acetaminophen
  • casimersen
  • carisoprodol, aspirin, and codeine
  • carisoprodol
  • carboprost tromethamine
  • flurandrenolide
  • brinzolamide/brimonidine
  • betamethasone topical
  • omaveloxolone
  • bardoxolone
  • allogeneic processed thymus tissue
  • fluocinolone topical
  • tacrolimus topical
  • ruxolitnib topical
  • pimecrolimus topical
  • sofosbuvir, velpatasvir and voxilaprevir
  • sofosbuvir/velpatasvir
  • mitotane
  • elbasvir/​grazoprevir
  • wheat dextrin
  • vanadium
  • iron/folic acid/vitamin/mineral
  • molybdenum
  • sparsentan
  • velmanase alfa-tycv
  • pegcetacoplan
  • ferrous sulfate
  • cyclosporine ophthalmic
  • ferric pyrophosphate
  • ammonium lactate
  • etelcalcetide
  • iodoquinol
  • sucroferric oxyhydroxide
  • doxercalciferol
  • terconazole vaginal
  • cortisone
  • pyronaridine
  • tetrahydrozoline, ophthalmic
  • tenapanor
  • tesamorelin
  • benazepril/hydrochlorothiazide
  • nadolol and bendroflumethiazide
  • spironolactone and hydrochlorothiazide
  • COVID-19 Vaccine, mRNA
  • atosiban
  • bisoprolol and hydrochlorothiazide
  • ephedrine/guaifenesin
  • clonidine/chlorthalidone
  • captopril/hydrochlorothiazide
  • amlodipine/valsartan/hydrochlorothiazide
  • hydrochlorothiazide and irbesartan
  • candesartan/hydrochlorothiazide
  • ciclesonide intranasal
  • cromolyn sodium ophthalmic
  • methyldopa/hydrochlorothiazide
  • valsartan/hydrochlorothiazide
  • hydrochlorothiazide and triamterene
  • moexipril/hydrochlorothiazide
  • mometasone/intranasal
  • ofloxacin ophthalmic
  • cysteamine
  • metoprolol/hydrochlorothiazide
  • amlodipine/olmesartan
  • eprosartan/hydrochlorothiazide
  • amlodipine/telmisartan
  • hydrochlorothiazide/aliskiren
  • betamethasone/clotrimazole
  • telmisartan/hydrochlorothiazide
  • benazepril/amlodipine
  • bezlotoxumab
  • propranolol/hydrochlorothiazide
  • bupropion/naltrexone
  • burosumab
  • acetylcholine chloride intraocular solution
  • bupivacaine and meloxicam
  • budesonide and formoterol (inhalation)
  • valerian
  • entacapone/levodopa/carbidopa
  • carbidopa/levodopa
  • calaspargase pegol
  • cabotegravir
  • cefixime
  • calfactant
  • brinzolamide
  • daprodustat
  • brimonidine and timolol
  • brodalumab
  • buprenorphine and naloxone
  • hydrocortisone acetic acid otic
  • butorphanol
  • butoconazole
  • adapalene and benzoyl peroxide
  • acrivastine and pseudoephedrine
  • neomycin/polymyxin B/bacitracin topical
  • midodrine
  • baloxavir marboxil
  • bacitracin, neomycin, polymyxin B, and hydrocortisone topical
  • avatrombopag
  • glucagon
  • atenolol/chlorthalidone
  • adefovir
  • activated charcoal
  • avalglucosidase alfa
  • aclidinium and formoterol
  • iclaprim (Pending FDA Approval)
  • ampicillin/sulbactam
  • quinupristin/dalfopristin
  • lamivudine/zidovudine/abacavir
  • acetaminophen and caffeine
  • acetaminophen/pamabrom
  • abacavir and lamivudine
  • anifrolumab
  • elacestrant
  • anidulafungin
  • acetohydroxamic acid
  • alogliptin/pioglitazone
  • anthralin
  • pirtobrutinib
  • gabapentin
  • galsulfase
  • gadoterate meglumine
  • ferric gluconate
  • ferric derisomaltose
  • ethanolamine oleate
  • eteplirsen
  • vasopressin
  • desmopressin
  • meropenem/vaborbactam
  • ecallantide
  • econazole topical
  • dornase alfa
  • aspirin/dipyridamole
  • dipyridamole
  • difenoxin and atropine
  • diflorasone
  • difluprednate ophthalmic
  • eptinezumab
  • diethylpropion
  • dexchlorpheniramine
  • dexmethylphenidate
  • serdexmethylphenidate/​dexmethylphenidate
  • bexagliflozin
  • galcanezumab
  • fremanezumab
  • tapinarof topical
  • darifenacin
  • dalbavancin
  • darbepoetin alfa
  • azilsartan
  • colestipol
  • corticorelin
  • crotamiton
  • crofelemer
  • allogeneic cultured keratinocytes/fibroblasts in bovine collagen
  • tapentadol
  • cyclopentolate
  • polymyxin B/bacitracin topical
  • ketoconazole topical
  • tavaborole
  • tagraxofusp
  • crisaborole
  • crizanlizumab
  • satralizumab
  • spinosad
  • sacubitril/valsartan
  • sargramostim
  • sebelipase alfa
  • regadenoson
  • ribociclib/letrozole
  • ragweed allergen extract
  • radium-223 dichloride
  • secnidazole
  • setmelanotide
  • polycarbophil
  • plecanatide
  • sacituzumab govitecan
  • pertuzumab
  • pertuzumab/trastuzumab/hyaluronidase
  • pamidronate
  • halcinonide
  • glecaprevir/​pibrentasvir
  • glucarpidase
  • golodirsen
  • dextrose (antidote)
  • hexaminolevulinate
  • iohexol
  • ferric citrate
  • elapegademase
  • emicizumab
  • erenumab
  • danaparoid
  • dantrolene
  • eflapegrastim
  • edaravone
  • amcinonide
  • carglumic acid
  • alcaftadine ophthalmic
  • agalsidase beta
  • afamelanotide
  • fosdenopterin
  • lidocaine and chlorhexidine
  • levorphanol
  • calcifediol
  • factor VIIa, recombinant
  • triheptanoin
  • peanut oral allergen powder
  • teprotumumab
  • poly-L-lactic acid/carboxymethylcellulose/mannitol
  • xenon Xe 129 hyperpolarized
  • ublituximab
  • anacaulase
  • glatiramer
  • peginterferon beta-1a
  • interferon beta-1a
  • onabotulinumtoxinA
  • cycloserine
  • ethionamide
  • cabotegravir and rilpivirine
  • vericiguat
  • omidenepag isopropyl
  • azelastine/fluticasone intranasal
  • benzyl peroxide
  • vutrisiran
  • brimonidine
  • testosterone topical
  • lenacapavir
  • tebentafusp
  • mosunetuzumab
  • faricimab
  • ganirelix
  • nadofaragene firadenovec
  • ozenoxacin
  • guaifenesin
  • adagrasib
  • guselkumab
  • adalimumab-aacf
  • nonoxynol-9
  • nifurtimox
  • nusinersen
  • nitazoxanide
  • mavacamten
  • calcipotriene
  • bimatoprost
  • obinutuzumab
  • amifostine
  • oxycodone/​aspirin
  • oxycodone/ibuprofen
  • oteseconazole
  • oxychlorosene
  • porfimer
  • pramoxine /hydrocortisone topical
  • podofilox
  • quinapril/hydrochlorothiazide
  • acetaminophen/pamabrom/pyrilamine
  • levobunolol
  • paregoric
  • idursulfase
  • lesinurad and allopurinol
  • latanoprost/​netarsudil ophthalmic
  • lactase enzyme
  • bioadherent oral
  • latanoprost and timolol
  • latanoprostene bunod
  • ledipasvir/sofosbuvir
  • imipenem/cilastatin/relebactam
  • imipenem/cilastatin
  • hemin
  • deucravacitinib
  • house dust mite allergen extract
  • halobetasol topical/tazarotene
  • remimazolam
  • somatropin
  • remifentanil
  • ethotoin
  • etidronate
  • empagliflozin, linagliptin, and metformin
  • elvitegravir/cobicistat/emtricitabine/tenofovir AF
  • empagliflozin/​linagliptin
  • evinacumab
  • finasteride and tadalafil
  • flortaucipir (18F)
  • proparacaine/ fluorescein ophthalmic
  • fluorescein/benoxinate ophthalmic
  • fluphenazine
  • alogliptin/​metformin
  • alogliptin/pioglitazone
  • alitretinoin topical
  • dextrose/ sodium citrate/fructose
  • dasabuvir
  • ombitasvir​/paritaprevir/​ritonavir
  • hydrocodone/​chlorpheniramine/​pseudoephedrine
  • hydroxyamphetamine/​tropicamide
  • acamprosate
  • gadobutrol
  • teclistamab
  • tremelimumab
  • futibatinib
  • etranacogene dezaparvovec
  • olutasidenib
  • naproxen and diphenhydramine
  • naratriptan
  • gadopiclenol
  • gadoxetate
  • gadoversetamide
  • naphazoline/pheniramine
  • naphazoline
  • nalbuphine
  • vosoritide
  • vitamin K1 (phytonadione)
  • moxidectin
  • basiliximab
  • fecal microbiota, live-jslm
  • ibuprofen/famotidine
  • famotidine
  • raxibacumab
  • omalizumab
  • measles, mumps, rubella, and varicella vaccine, live (Rx)
  • senna/docusate
  • dinoprostone
  • measles mumps and rubella vaccine, live
  • immune globulin IM (IGIM)
  • dyclonine
  • doravirine, lamivudine, and tenofovir disoproxil fumarate
  • elexacaftor/tezacaftor/ivacaftor
  • ivacaftor/tezacaftor
  • treosulfan
  • tranexamic acid
  • norethindrone acetate/​estradiol/​elagolix
  • artesunate
  • trientine
  • trifarotene
  • ziconotide
  • vonoprazan/amoxicillin/clarithromycin
  • pyrithione zinc
  • zinc oxide topical
  • naphazoline/​zinc sulfate/​glycerin ophthalmic
  • voretigene neparvovec
  • nirmatrelvir/ritonavir
  • bebetelovimab
  • sodium chloride
  • relugolix/​estradiol/​norethindrone
  • defibrotide
  • prothionamide
  • liraglutide
  • etilfrine
  • alpha-lipoic acid
  • ramosetron
  • olodaterol/tritropium
  • cimetropium
  • umeclidinium
  • itopride
  • secretin
  • naftopidil
  • trimeprazine
  • benperidol
  • chlormethiazole
  • multivitamins
  • secukinumab
  • glycopyrrolate inhaled and formoterol
  • amitriptyline and chlordiazepoxide
  • tirzepatide
  • relugolix/estradiol/norethindrone
  • mupirocin
  • alvimopan
  • chlordiazepoxide
  • insulin regular human
  • insulin aspart protamine/​insulin aspart
  • insulin isophane human/​insulin regular human
  • insulin degludec/insulin aspart
  • teplizumab
  • chlordiazepoxide/clidinium
  • aspirin, sodium bicarbonate, and citric acid
  • aluminum hydroxide, magnesium hydroxide, and simethicone
  • glycopyrrolate inhaled
  • olodaterol/tiotropium
  • umeclidinium bromide
  • timolol/dorzolamide
  • travoprost ophthalmic
  • loxapine
  • eptifibatide
  • hydrocodone/acetaminophen
  • omega 3 fatty acids
  • trandolapril/​verapamil
  • abciximab
  • artificial saliva
  • diphtheria, hepatitis B, pertussis (acellular), polio, and tetanus vaccine
  • diphtheria, haemophilus B, pertussis, polio, tetanus vaccine
  • haemophilus influenzae type b vaccine/hepatitis b vaccine
  • butalbital/aspirin/caffeine 
  • colchicine/probenecid
  • atovaquone and proguanil
  • ursodiol
  • chenodiol
  • casirivimab/imdevimab
  • tixagevimab/cilgavimab
  • molnupiravir
  • bebtelovimab
  • calcium, magnesium, potassium and sodium oxybate
  • sodium oxybate
  • diphtheria, polio, pertussis acellular, tetanus vaccine
  • pseudoephedrine loratadine
  • sodium chloride nasal
  • hydroxychloroquine sulfate
  • atorvastatin and ezetimibe
  • teriparatide
  • alendronate and cholecalciferol
  • alprostadil (IV)
  • romosozumab
  • risedronate
  • alendronate
  • glyburide/metformin
  • clorazepate
  • rosuvastatin/​ezetimibe
  • paclitaxel/encequidar
  • valsartan/amlodipine
  • enalapril/hydrochlorothiazide
  • enalapril and felodipine
  • amiloride/hydrochlorothiazide
  • triamterene/hydrochlorothiazide
  • lisinopril/hydrochlorothiazide
  • tegaserod
  • rhein
  • ritanserin
  • sulfaphenazole
  • sulconazole
  • taurursodiol
  • bromeperidol
  • carbapenems
  • fotemustine
  • difelikefalin
  • bromopride
  • alizapride
  • olopatadine
  • oxomemazine
  • paraldehyde
  • oxcarbazepine
  • kratom
  • elexacaftor
  • oritavancin
  • miocamycin
  • curcumin sulfate
  • seproxetine
  • clotrimazole
  • remacemide
  • piperine
  • ditiocarb
  • danoprevir
  • oxetacaine
  • topiroxostat
  • indisulam
  • tofisopam
  • noscapine
  • thiopental
  • tioconazole
  • nicotinamide
  • rutin
  • mequitazine
  • somatostatin
  • vapreotide
  • econazole
  • saracatinib
  • lestaurtinib
  • efonidipine
  • zimelidine
  • indalpine
  • desvenlafaxine
  • benidipine
  • dapoxetine
  • tesmilifene
  • pergolide
  • sitaxentan
  • resveratrol
  • bifonazole
  • tildipirosin
  • solithromycin
  • selamectin
  • imiquimod topical
  • fluorouracil topical
  • peginterferon alfa-2b
  • interferon alfa-2b
  • alteplase
  • tanshinone I
  • rosmarinic acid
  • caryophyllene
  • ursolic acid
  • cepharanthine
  • veliflapon
  • mirikizumab
  • cp-96345
  • famprofazone
  • peoniflorin
  • fepradinol
  • licofelone
  • polmacoxib
  • ebselen
  • taxifolin
  • betulinic acid
  • flurbiprofen axetil
  • talniflumate
  • morniflumate
  • nitroaspirin
  • firocoxib
  • ns-398
  • cimicoxib
  • robenacoxib
  • sc-236
  • imidazole salicylate
  • trolamine salicylate
  • pirprofen
  • benorilate
  • ethenzamide
  • mofebutazone
  • proquazone
  • carbaspirin calcium
  • guacetisal
  • proglumetacin
  • propyphenazone
  • pranoprofen
  • bendazac
  • tenidap
  • lonazolac
  • nifenazone
  • flunoxaprofen
  • difenpiramide
  • feprazone
  • bufexamac
  • alminoprofen
  • suxibuzone
  • fentiazac
  • tinoridine
  • tepoxalin
  • indobufen
  • flunixin
  • propacetamol
  • clonixin
  • droxicam
  • epirizole
  • etofenamate
  • ibuproxam
  • indoprofen
  • kebuzone
  • felbinac
  • zaltoprofen
  • azapropazone
  • zomepirac
  • niflumic acid
  • magnesium salicylate
  • suprofen
  • nepafenac
  • bromfenac
  • ciprofloxacin and hydrocortisone (otic) (Rx)
  • hydrocortisone/neomycin/polymyxin otic (Rx)
  • vigabatrine
  • valproate
  • tezepelumab (Rx)
  • triamcinolone acetonide/nystatin
  • triamcinolone suprachoroidal (Rx)
  • triamcinolone, intranasal
  • ciclesonide inhaled
  • diosmin
  • tirbanibulin
  • padeliporfin
  • roxadustat
  • aminosalicylic acid
  • rasburicase
  • tetracaine
  • articaine
  • ropivacaine
  • nitrous oxide
  • sulfapyridine
  • sulfanilamide
  • mafenide
  • isometheptene
  • amyl nitrite
  • antipyrine
  • isosorbide dinitrate
  • prilocaine
  • nitroglycerin
  • tobacco
  • batefenterol
  • hexoprenaline
  • pf-00610355
  • racepinephrine
  • protokylol
  • doxofylline
  • phenylpropanolamine
  • isoetharine
  • ephedra sinica root
  • dipivefrin
  • arbutamine
  • norepinephrine
  • fenoterol
  • clenbuterol
  • pirbuterol
  • epinephrine
  • ritodrine
  • procaterol
  • orciprenaline
  • bitolterol
  • abediterol
  • fluticasone furoate, umeclidinium and vilanterol
  • fluticasone furoate and vilanterol
  • mometasone and formoterol
  • pramoxine topical (OTC)
  • menthol/pramoxine (topical)
  • tetrastarch
  • plasma protein fraction
  • hetastarch
  • rokitamycin
  • ridaforolimus
  • oleandomycin
  • patupilone
  • mitemcinal
  • midecamycin
  • mirvetuximab soravtansine
  • lorvotuzumab mertansine
  • kitasamycin
  • flurithromycin
  • eprinomectin
  • epofolate
  • epothilone D
  • coltuximab ravtansine
  • dirithromycin
  • doramectin
  • cethromycin
  • carbomycin
  • paramethasone
  • dexamethasone isonicotinate
  • quinupristin
  • sarilumab
  • dalfopristin
  • curcumin
  • luliconazole
  • procaine
  • chloroprocaine
  • phencyclidine
  • tenocyclidine
  • profenamine
  • halothane
  • lfenprodil
  • calcium levulinate
  • agmatine
  • calcium pangamate
  • calcium glubionate
  • edodekin alfa
  • beloranib
  • aflibercept
  • endostar
  • volociximab
  • roquinimex
  • anecortave acetate
  • squalamine
  • brolucizumab
  • trebananib
  • semaxanib
  • endostatin
  • halofuginone
  • resveratol
  • ranibizumab
  • fumagilin
  • bevacizumab
  • hyperforin
  • aminohippuric acid
  • opicapone
  • pafolacianine
  • bempedoic acid
  • belantamab mafodotin
  • prasterone
  • glecaprevir
  • levomenol
  • parachlorophenol
  • gadoxetic acid
  • cholecystokinin
  • caspofungin
  • ouabain
  • rifampicin
  • taurocholic acid
  • methylphosphinic acid
  • revefenacin
  • isoprenaline
  • posiphen
  • acotiamide
  • triflupromazine
  • pegvisomant
  • pipecuronium
  • regramostim
  • phenserine
  • diethylcarbamazine
  • cinchocaine
  • pancuronium
  • bambuterol
  • hexafluronium
  • aprotinin
  • tyrothricin
  • decamethonium
  • ipidacrine
  • tubocurarine
  • paraoxon
  • ginkgo biloba
  • methanesulfonyl fluoride
  • dichlorvos
  • fenthion
  • metrifonate
  • coumaphos
  • huperzine A
  • distigmine
  • neostigmine
  • isoflurophate
  • tasosartan
  • fimasartan
  • methylthioninium
  • minaprine
  • gallamine triethiodide
  • ambenonium
  • abiraterone
  • mibefradil
  • hydrocortisone (systemic)
  • cetirizine (systemic)
  • Talimogene Laherparepvec
  • Diacerein
  • Magnesium glucoheptonate
  • acyclovir and hydrocortisone
  • acyclovir (ophthalmic)
  • acyclovir (topical)
  • docosanol cream
  • camphor and phenol
  • dolutegravir, abacavir, and lamivudine
  • peramivir
  • lisdexamfetamine
  • ergoloid mesylates
  • memantine/donepezil
  • tranylcypromine
  • isocarboxazid
  • methenamine/sodium salicylate/benzoic acid
  • mometasone topical (Rx)
  • Esketamine intranasal
  • Oracit
  • Shohls Solution
  • sodium lactate
  • sodium citrate
  • lecanemab
  • donepezil (Rx)
  • donepezil transdermal
  • sodium thiosulfate
  • ciclopirox
  • undecylenic acid
  • butenafine
  • calcium and vitamin D
  • zoledronic acid
  • calcitonin salmon
  • pizotifen
  • indoramin
  • salicylic acid acne
  • minoxidil topical
  • adapalene
  • orlistat
  • COVID-19 subunit vaccine
  • amoxicillin /vonoprazan
  • levamlodipine (Rx)
  • Omeprazole, amoxicillin, and clarithromycin
  • simvastatin/ezetimibe
  • amlodipine/atorvastatin
  • amoxicillin and clavulanate potassium
  • lansoprazole, amoxicillin, and clarithromycin
  • noradrenaline
  • carbaryl
  • botulinum toxin
  • atropine
  • artemether/lumefantrine
  • ergonovine
  • bunazosin (Not available in the United States)
  • ibalizumab
  • dolutegravir
  • hydrocodone/pseudoephedrine
  • cetirizine/pseudoephedrine
  • acetaminophen/dextromethorphan/pseudoephedrine/guaifenesin
  • acetaminophen IV/ibuprofen IV (Pending FDA Approval)
  • medroxyprogesterone
  • acetaminophen/caffeine
  • Acetaminophen/magnesium salicylate/pamabrom
  • megestrol
  • pyridoxine (vitamin B6)
  • folic acid-cyanocobalamin-pyridoxine
  • L-methylfolate-pyridoxal 5′-phosphate-methylcobalamine
  • estropipate
  • betamethasone (systemic)
  • dolutegravir and lamivudine
  • zidovudine and lamivudine
  • mineral oil (oral/rectal)
  • regular insulin
  • dextromethorphan/bupropion
  • diphenhydramine/ibuprofen
  • enfuvirtide
  • doxapram
  • methamphetamine
  • dextroamphetamine
  • ephedrine
  • brompheniramine, dextromethorphan and phenylephrine
  • aspirin, chlorpheniramine, and phenylephrine
  • acetaminophen, pheniramine, and phenylephrine
  • chlorpheniramine and phenylephrine
  • guaifenesin and phenylephrine
  • rivastigmine
  • pyridostigmine
  • arecoline
  • physostigmine
  • abobotulinumtoxinA
  • echothiophate iodide
  • malathion
  • glibenclamide
  • rimabotulinumtoxinB
  • pioglitazone
  • daxibotulinumtoxinA
  • prabotulinumtoxinA
  • mepenzolate
  • trospium
  • modafinil
  • budesonide (oral inhalation)
  • budesonide (nasal)
  • budesonide (Topical)
  • vedolizumab
  • hydrocodone and homatropine
  • homatropine ophthalmic
  • methscopolamine
  • oxandrolone
  • nandrolone
  • fluoxymesterone
  • procyclidine
  • biperiden
  • benztropine
  • oxymetholone
  • ipratropium
  • belladonna/opium
  • pilocarpine
  • nicotine intranasal
  • succinylcholine
  • cromolyn sodium
  • mepolizumab
  • palivizumab
  • reslizumab
  • dupilumab
  • potassium iodide
  • beclomethasone (nasal)
  • tetrahydrozoline nasal
  • fluticasone (topical)
  • tecovirimat
  • entacapone
  • vaccinia immune globulin intravenous (Rx)
  • smallpox (vaccinia) vaccine, live
  • terazosin
  • labetalol 
  • smallpox and monkeypox vaccine (live, nonreplicating) (US: Availability limited to health department/CDC expanded access protocol) (Rx)
  • oxymetazoline
  • xylometazoline
  • meclizine
  • prazosin
  • belinostat
  • nabilone
  • tripelennamine
  • bismuth subcitrate, metronidazole and tetracycline
  • levalbuterol
  • rifaximin
  • cotrimoxazole
  • ethacrynic acid
  • senna
  • bisacodyl
  • sodium picosulfate, citric acid, and magnesium oxide
  • kaolin
  • anastrozole
  • docusate
  • cascara
  • dichlorphenamide
  • bismuth subsalicylate
  • methylcellulose
  • magnesium sulfate 
  • talazoparib
  • diphenoxylate/atropine
  • bacillus clausii
  • psyllium
  • bifidobacterium
  • lactobacillus
  • saccharomyces boulardii
  • lanreotide
  • cyproterone
  • ramucirumab (Rx)
  • fidaxomicin
  • tobramycin (systemic)
  • dacomitinib
  • pembrolizumab
  • amikacin (systemic)
  • panitumumab
  • blinatumomab
  • durvalumab
  • olaratumab
  • necitumumab
  • moxetumomab pasudotox
  • mogamulizumab
  • inotuzumab
  • dinutuximab
  • pentamycin
  • dibekacin
  • cemiplimab
  • gemtuzumab
  • demeclocycline
  • omadacycline
  • tobramycin (ophthalmic)
  • sarecycline
  • cefiderocol
  • valrubicin
  • plicamycin
  • denileukin diftitox
  • decitabine
  • niraparib
  • methacholine
  • carbachol
  • bethanechol
  • acetylcholine
  • atezolizumab
  • raloxifene
  • avelumab
  • leucovorin
  • cladabrine
  • pralatrexate
  • meclofenamate
  • pemetrexed
  • ustekinumab
  • diroximel fumarate
  • daratumumab
  • coccidioidin skin test
  • candida albicans extract
  • brewer’s yeast
  • poliovirus vaccine, live, trivalent
  • elotuzumab
  • trimetrexate
  • l-methyl folate
  • methyclothiazide
  • Influenza virus vaccine
  • acitretin
  • tafamidis
  • sapropterin
  • Pidotimod
  • nitisinone
  • mipomersen
  • levetiracetam
  • Inebilizumab
  • Diethylamine salicylate
  • COVID-19 vaccine
  • Cephalothin
  • alitretinoin
  • Alitretinoin
  • methotrexate
  • verteporfin
  • omacetaxine
  • methyl aminolevulinate topical
  • efgartigimod alfa
  • aminolevulinic acid
  • cetuximab
  • streptozocin
  • zoster vaccine recombinant
  • lyme disease vaccine
  • human papillomavirus vaccine
  • daclizumab
  • lomustiine
  • amitriptyline
  • triptorelin
  • Tedizolid
  • rituximab
  • darolutamide
  • altretamine
  • Varicella-zoster vaccine
  • topotecan
  • ajmaline
  • pneumococcal vaccine
  • poliovirus vaccine
  • adenovirus vaccine type 7
  • adenovirus vaccine type 4
  • brincidofovir
  • lenograstim
  • ofatumumab
  • doxorubicin
  • thioguanine
  • tetanus toxoid
  • primidone
  • lipegfilgrastim
  • pegaspargase
  • monomethyl fumarate
  • ibritumomab
  • dimethyl fumarate
  • varicella-zoster vaccine (recombinant)
  • influenza virus vaccine, h5n1, live
  • carmustine
  • influenza virus vaccine (h5n1), adjuvanted
  • influenza a (h5n1) vaccine
  • eluxadoline
  • influenza virus vaccine quadrivalent, adjuvanted
  • idecabtagene vicleucel
  • adenovirus types 4 and 7 live, oral
  • thiotepa
  • tocilizumab
  • levodopa inhaled
  • efalizumab
  • canakinumab
  • aminoglutethimide
  • ado-trastuzumab emtansine
  • adenovirus vaccine
  • zoster vaccine live
  • typhoid vaccine, live
  • influenza virus vaccine, live, trivalent
  • influenza virus vaccine, h1n1, live
  • delavirdine
  • paclitaxel
  • siltuximab
  • miconazole
  • fludarabine
  • epirubicin
  • vinblastine
  • lomustine
  • risankizumab
  • rilonacept
  • pacritinib
  • linezolid
  • griseofulvin
  • vincristine
  • rufinamide
  • phenobarbital
  • nelarabine
  • mitoxantrone
  • mitomycin
  • mitapivat
  • letermovir
  • lasmiditan
  • idarubicin
  • filgrastim
  • elagolix
  • daunorubicin
  • daclatasvir
  • carfilzomib
  • anakinra
  • alefacept
  • thalidomide
  • teriflunomide
  • rubella virus vaccine
  • ozanimod
  • mumps virus vaccine
  • measles virus vaccine
  • golimumab
  • etanercept
  • certolizumab
  • adalimumab
  • etoposide
  • mechlorethamine
  • adenovirus type 7 vaccine
  • melphalan
  • palifermin
  • pimecrolimus
  • ropeginterferon alfa 2b
  • tacrolimus
  • tofacitinib
  • amphotericin B cholesteryl sulfate
  • amphotericin B deoxycholate
  • amphotericin B liposomal
  • amphotericin B phospholipid complex
  • anthrax vaccine adsorbed
  • denosumab
  • diphtheria & tetanus toxoids
  • echinacea
  • haemophilus influenzae type b vaccine
  • hepatitis A vaccine inactivated
  • hepatitis a/b vaccine
  • hepatitis b vaccine
  • HIV vaccine
  • human papillomavirus vaccine, quadrivalent
  • hydroxyurea
  • influenza virus vaccine (H5N1)
  • influenza virus vaccine trivalent
  • influenza virus vaccine trivalent, adjuvanted
  • influenza virus vaccine trivalent, recombinant
  • meningococcal A C Y and W-135 diphtheria conjugate vaccine
  • meningococcal A C Y and W-135 polysaccharide vaccine combined
  • meningococcal group B vaccine
  • ofatumumab SC
  • pneumococcal vaccine 13-valent
  • pneumococcal vaccine heptavalent
  • pneumococcal vaccine polyvalent
  • poliovirus vaccine inactivated
  • rabies vaccine
  • sipuleucel-T
  • trastuzumab
  • trastuzumab deruxtecan
  • eslicarbazepine acetate
  • vitamin A
  • rifampin
  • belzutifan
  • belimumab
  • belatacept
  • armodafinil
  • amobarbital
  • alemtuzumab
  • ocrelizumab
  • nivolumab
  • natalizumab
  • fingolimod
  • desogestrel
  • butalbital
  • brexanolone
  • zoster vaccine
  • yellow fever vaccine
  • varicella virus vaccine
  • smallpox vaccine
  • rotavirus vaccine
  • rubella vaccine
  • influenza virus vaccine quadrivalent
  • atracurium
  • dengue vaccine
  • tisagenlecleucel
  • lisocabtagene maraleucel
  • ciltacabtagene autoleucel
  • brexucabtagene autoleucel
  • axicabtagene ciloleucel
  • chlorambucil
  • ethinyl estradiol
  • dicumarol
  • atenolol
  • anisindione
  • penicillin G benzathine
  • sequelerin
  • chloramphenicol
  • heparin
  • enoxaparin
  • dalteparin
  • bivalirudin
  • argatroban
  • willow bark
  • bazedoxifene/conjugated estrogens
  • aspirin rectal
  • aspirin/citric acid/sodium bicarbonate
  • aspirin
  • ganaxolone
  • erythromycin stearate
  • erythromycin lactobionate
  • erythromycin ethylsuccinate
  • elbasvir/grazoprevir
  • daridorexant
  • cholera vaccine
  • lumacaftor/ivacaftor
  • dienogest/estradiol valerate
  • zafirlukast
  • urofollitropin
  • tralokinumab
  • torsemide
  • tazarotene
  • pseudoephedrine
  • propoxiphene napsylate
  • propoxiphene hydrochloride
  • oxyphencyclimine hydrochloride
  • oxymetazoline hydrochloride
  • naxitamab
  • nandrolone decanoate
  • methylphenidate
  • methocarbamol
  • idoxuridine
  • hyaluronidase
  • hyaluronic acid
  • gonadoreline hydrochloride
  • glycopyrrolate
  • ganirelix acetate
  • gallium citrate
  • fulvestrant
  • fexofenadine hydrochloride
  • fenefluramine hydrochloride
  • febuxostat
  • famciclovir
  • ergocalciferol
  • divalproex sodium
  • diclorfenamide
  • dezocine
  • desmopressin acetate
  • demeclocycline hydrochloride
  • defibrotide sodium
  • deferiprone
  • deferasirox
  • daunorubicin hydrochloride
  • darunavir
  • darifenacin hydrobromide
  • daptomycin
  • dapsone
  • dantrolene sodium
  • danazol
  • dalafampridine
  • dalbavancin Hydrochloride
  • daclatasvir dihydrochloride
  • dactinomycin
  • dacitabine
  • cefiderocol sulfate tosylate
  • butoconazole nitrate
  • benralizumab (Rx)
  • albuterol
  • acetylcysteine
  • acebutolol
  • acam2000
  • abrocitinib
  • abatacept
  • abametapir
  • abaloparatide
  • chloroquine
  • ferric maltol
  • lorlatinib
  • piracetam
  • timolol
  • chlorothiazide
  • ferric pyrophosphate citrate
  • lornoxicam
  • piretanide
  • tinidazole
  • chloroxylenol
  • ferric sulfate
  • lorpiprazole
  • pirfenidone
  • tiopronin
  • chlorpheniramine
  • ferrous bisglycinate
  • losartan
  • piroxicam
  • tiotropium
  • chlorpromazine
  • ferrous fumarate
  • lovastatin
  • pitavastatin
  • tipranavir
  • chlorpropamide
  • ferrous gluconate
  • loxoprofen
  • pitolisant
  • tirofiban
  • chlorprothixene
  • ferrous succinate
  • lubiprostone
  • pivampicillin
  • tisotumab vedotin
  • chlorthalidone
  • ferrous sulfate anhydrous
  • lumateperone
  • pivmecillinam
  • tixocortol
  • chlorzoxazone
  • ferumoxides
  • lumefantrine
  • plazomicin
  • tizanidine
  • abiraterone
  • cholecalciferolc
  • ferumoxsil
  • lumiracoxib
  • plerixafor
  • tobramycin (oral inhalation)
  • acalabrutinib
  • choline c 11
  • ferumoxytol
  • lurasidone
  • polatuzumab vedotin
  • tocainide
  • acarbose
  • choline magnesium trisalicylate
  • fesoterodine
  • lurbinectedin
  • polythiazide
  • tocofersolan
  • aceclofenac
  • choline salicylate
  • fexinidazole
  • lynestrenol
  • pomalidomide
  • tocopherol
  • acemetacin
  • chondroitin sulfate
  • finasteride
  • macimorelin
  • ponatinib
  • acenocoumarol
  • chromic chloride
  • finerenone (Rx)
  • macitentan
  • ponesimod
  • tolazamide
  • acetaminophen
  • chromic nitrate
  • fish oil
  • magaldrate
  • posaconazole
  • tolbutamide
  • acetazolamide
  • chromium
  • flavoxate
  • magnesium
  • potassium
  • tolcapone
  • acetohexamide
  • chromium gluconate
  • flecainide
  • magnesium carbonate
  • potassium acetate
  • tolfenamic acid
  • acetylsalicylic acid
  • chromium nicotinate
  • flibanserin
  • magnesium chloride
  • potassium bicarbonate
  • tolmetin
  • acipimox
  • chromous sulfate
  • floctafenine
  • magnesium citrate
  • potassium cation
  • tolterodine
  • aclidinium
  • ciclesonide
  • florbetaben (18f)
  • magnesium gluconate
  • potassium chloride
  • tolvaptan
  • acrivastine
  • cidofovir
  • florbetapir (18f)
  • magnesium hydroxide
  • potassium citrate
  • topiramate
  • acyclovir
  • cilazapril
  • floxuridine
  • magnesium oxide
  • potassium nitrate
  • adefovir dipivoxil
  • cilostazol
  • flucloxacillin
  • magnesium silicate
  • potassium perchlorate
  • torasemide
  • adenosine
  • cimetidine
  • fluconazole
  • potassium sulfate
  • toremifene
  • agomelatine
  • cinacalcet
  • flucytosine
  • magnesium trisilicate
  • tositumomab
  • albendazole
  • cinnarizine
  • fludeoxyglucose (18f)
  • mangafodipir
  • pralidoxime
  • trabectedin
  • albiglutide
  • cinoxacin
  • fludrocortisone
  • manidipine
  • pralsetinib
  • tramadol
  • albutrepenonacog alfa
  • ciprofibrate
  • fluindione
  • mannitol
  • pramipexole
  • trametinib
  • alclofenac
  • cisapride
  • flumazenil
  • maprotiline
  • pramlintide
  • trandolapril
  • aldesleukin
  • cisplatin
  • flumethasone
  • maraviroc
  • prasugrel
  • trastuzumab emtansine
  • alectinib
  • citalopram
  • flunarizine
  • maribavir
  • pravastatin
  • trazodone
  • alendronic acid
  • cladribine
  • flunisolide
  • mebeverine
  • prazepamb
  • treprostinil
  • alfentanil
  • clarithromycin
  • flunitrazepam
  • mecamylamine
  • praziquantel
  • tretinoin
  • alfuzosin
  • clemastine
  • fluocinolone acetonide
  • mecasermin
  • prednisolone
  • triamcinolone
  • alimemazine
  • clevidipine
  • fluocinonide
  • meclofenamic acid
  • prednisolone acetate
  • triamterene
  • aliskiren
  • clindamycin
  • fluocortolone
  • medrogestone
  • prednisolone phosphate
  • triazolam
  • allopurinol
  • clobazam
  • fluorouracil
  • medroxyprogesterone acetate
  • prednisone (Rx)
  • trichlormethiazide
  • almasilate
  • clobetasol propionate
  • fluoxetine
  • mefenamic acid
  • prednisone acetate
  • triclabendazole
  • almotriptan
  • clofarabine
  • flupentixol
  • mefloquine
  • pregabalin
  • triethylenetetramine
  • alogliptin
  • clofazimine
  • fluprednisolone
  • megestrol acetate
  • pregnenolone
  • trifluoperazine
  • alosetron
  • clofibrate
  • flurazepam
  • melatonin
  • prenylamine
  • trifluridine
  • alpelisib
  • clomipramine
  • flurbiprofen
  • meloxicam
  • pretomanid
  • trilaciclib
  • alprazolam
  • fluspirilene
  • memantine
  • primaquine
  • trilostane
  • clonidine
  • flutamide
  • menthyl salicylate
  • probenecid
  • trimebutine
  • aluminium phosphate
  • clopidogrel
  • fluticasone (nasal)
primidone + 

acenocoumarol

may increase the metabolism of vitamin K antagonists

fluindione

may increase the metabolism of vitamin K antagonists

phenindione

may increase the metabolism of vitamin K antagonists

phylloquinone

may increase the metabolism of vitamin K antagonists

warfarin

may increase the metabolism of vitamin K antagonists

maribavir 

may decrease the levels of serum concentration of maribavir

tranylcypromine

may increase the metabolism of tricyclic antidepressants

dextromethorphan/bupropion

may increase the metabolism of tricyclic antidepressants

amitriptyline

may increase the metabolism of tricyclic antidepressants

brexanolone

may increase the metabolism of tricyclic antidepressants

doxepin

may increase the metabolism of tricyclic antidepressants

protriptyline

may increase the metabolism of tricyclic antidepressants

abiraterone 

may diminish the serum concentration of CYP3A4 inducers

acalabrutinib 

may diminish the serum concentration of CYP3A4 inducers

bictegravir 

may diminish the serum concentration of primidone

canagliflozin 

may diminish the serum concentration of primidone

carmustine 

may diminish the serum concentration of primidone

clarithromycin 

may enhance serum concentrations of CYP3A4 inducers

clozapine 

may diminish the serum concentration of CYP3A4 Inducers

codeine 

may increase the CNS depressant effect of primidone

dasatinib 

may diminish the serum concentration of CYP3A4 inducers

dexamethasone 

may diminish the serum concentration of CYP3A4 inducers

nifedipine 

may decrease the serum concentration when combined with CYP3A4 Inducers (Strong)

sparsentan 

may increase or decrease the activity of this enzyme when combined with sparsentan

alfentanil 

may diminish the serum concentration when combined with alfentanil

apixaban 

may diminish the serum concentration when combined with apixaban

aripiprazole 

may diminish the serum concentration when combined with aripiprazole

aripiprazole lauroxil 

may diminish serum concentrations when combined with aripiprazole lauroxil

atogepant 

may diminish the serum concentration when combined with atogepant

belumosudil 

may diminish the serum concentration when combined with belumosudil

brexpiprazole 

may diminish the serum concentration when combined with brexpiprazole

ubrogepant 

may diminish the serum concentration when combined with ubrogepant

fenfluramine 

may diminish the serum concentration when combined with fenfluramine

brivaracetam 

CYP2C19 Inducers: they may diminish the serum concentration of brivaracetam

cabozantinib 

cabozantinib :they may diminish the serum concentration of CYP3A4 Inducers

clopidogrel 

clopidogrel: they may enhance serum concentrations of CYP2C19 Inducers

cyclosporine 

cyclosporin: they may diminish the serum concentration of CYP3A4 Inducers

diltiazem 

diltiazem: they may diminish the serum concentration of CYP3A4 Inducers

enzalutamide 

enzalutamide: they may diminish serum concentrations of the active metabolites of CYP3A4 inducers

eravacycline 

CYP3A4 inducers: they may diminish the serum concentration of eravacycline

erlotinib 

erlotinib: they may diminish the serum concentration of CYP3A4 inducers

etoposide 

etoposide: they may diminish the serum concentration of CYP3A4 inducers

exemestane 

exemestane: they may diminish the serum concentration of CYP3A4 Inducers

felodipine 

felodipine: they may diminish the serum concentration of CYP3A4 Inducers

ganaxolone 

CYP3A4 inducers: they may diminish the serum concentration of ganaxolone

buprenorphine buccal 

may increase the CNS depressant effect of Buprenorphine

sotorasib 

may diminish the serum concentration of zanubrutnib

drospirenone/ethinyl estradiol/levomefolate 

may diminish the serum concentration of Hormonal Contraceptives

buprenorphine,long-acting injection 

may increase the CNS depressant effect of Buprenorphine

rilpivirine 

it decreases the concentration of rilpivirine in the serum

ixazomib

primidone decreases the effect of ixazomib by altering intestinal/hepatic CYP3A4 enzyme metabolism

fondaparinux 

may increase the levels of each other by decreasing the metabolism

hemin 

may reduce the therapeutic effect of hemin

abemaciclib 

may reduce the level of serum concentration of abemaciclib

methyldopa/hydrochlorothiazide 

may increase the hypotensive effect of blood pressure-lowering agents

adagrasib 

may diminish the serum concentration of CYP3A4 inducers

alpelisib 

may diminish the serum concentration of CYP3A4 inducers

apremilast 

may diminish the serum concentration of CYP3A4 inducers

asunaprevir 

may diminish the serum concentration of CYP3A4 inducers

avanafil 

may diminish the serum concentration of CYP3A4 inducers

bedaquiline 

may diminish serum concentrations of CYP3A4 inducers

bortezomib 

may diminish the serum concentration of CYP3A4 inducers

cobicistat 

may diminish the serum concentration of primidone

deflazacort 

may diminish serum concentrations of CYP3A4 inducers

fexinidazole 

may enhance the serum concentration when combined with CYP3A4 substrates

glasdegib 

they decrease the concentration of glasdegib in the serum

infigratinib 

they decrease the concentration of active metabolites of infigratinib in the serum

fusidic acid 

may enhance the serum concentration when combined with CYP3A4 substrates

elbasvir/​grazoprevir 

may enhance the serum concentration of elbasvir/grazoprevir

buspirone 

it increases the concentration of CYP3A4 substrates in the serum

tolvaptan 

may diminish the serum concentration when combined with tolvaptan

abrocitinib 

abrocitinib: they may diminish the serum concentration of CYP2C19 Inducers

avapritinib 

CYP3A4 Inducers: they may diminish the serum concentration of avapritinib

capmatinib 

CYP3A4 Inducers: they may diminish the serum concentration of capmatinib

ceritinib 

ceritinib: they may diminish the serum concentration of CYP3A4 Inducers

crizotinib 

crizotinib: they may diminish the serum concentration of CYP3A4 Inducers

duvelisib 

duvelisib: they may diminish the serum concentration of CYP3A4 Inducers

avacopan 

The serum concentration of Avacopan may be decreased by strong CYP3A4 inducers

lurbinectedin 

they decrease the concentration of lurbinectedin in the serum

mibefradil

Barbiturates may enhance the hypotensive effect of Blood Pressure Lowering Agents

indoramin

Barbiturates may enhance the hypotensive effect of Blood Pressure Lowering Agents

amlodipine/atorvastatin

Barbiturates may enhance the hypotensive effect of Blood Pressure Lowering Agents

terazosin

Barbiturates may enhance the hypotensive effect of Blood Pressure Lowering Agents

atenolol

Barbiturates may enhance the hypotensive effect of Blood Pressure Lowering Agents

acenocoumarol

may increase the metabolism of Vitamin K Antagonists

fluindione

may increase the metabolism of Vitamin K Antagonists

phenindione

may increase the metabolism of Vitamin K Antagonists

phylloquinone

may increase the metabolism of Vitamin K Antagonists

warfarin

may increase the metabolism of Vitamin K Antagonists

mibefradil

may increase the hypotensive effect

indoramin

may increase the hypotensive effect

amlodipine/atorvastatin

may increase the hypotensive effect

terazosin

may increase the hypotensive effect

atenolol

may increase the hypotensive effect

tranylcypromine

barbiturates may increase the metabolism of tricyclic antidepressants

dextromethorphan/bupropion

barbiturates may increase the metabolism of tricyclic antidepressants

amitriptyline

barbiturates may increase the metabolism of tricyclic antidepressants

brexanolone

barbiturates may increase the metabolism of tricyclic antidepressants

mirtazapine

barbiturates may increase the metabolism of tricyclic antidepressants

estropipate

may reduce the level of serum concentration of estrogen drugs

bazedoxifene/conjugated estrogens

may reduce the level of serum concentration of estrogen drugs

conjugated estrogens

may reduce the level of serum concentration of estrogen drugs

diethylstilbestrol

may reduce the level of serum concentration of estrogen drugs

esterified estrogens

may reduce the level of serum concentration of estrogen drugs

captopril/hydrochlorothiazide

may have an increased hypotensive effect when combined with anti-hypertensive agents

minoxidil topical

may have an increased hypotensive effect when combined with anti-hypertensive agents

ethinyl estradiol

may decrease the levels of serum concentration

ethinylestradiol

may decrease the levels of serum concentration

ethynodiol diacetate

may decrease the levels of serum concentration

etonogestrel

may decrease the levels of serum concentration

sacituzumab govitecan

may decrease the levels of serum concentrations

topotecan

may decrease the levels of serum concentrations

epirubicin

may decrease the levels of serum concentrations

etoposide

may decrease the levels of serum concentrations

irinotecan

may decrease the levels of serum concentrations

sacituzumab govitecan

may decrease the levels of serum concentrations

topotecan

may decrease the levels of serum concentrations

etoposide

may decrease the levels of serum concentrations

irinotecan

may decrease the levels of serum concentrations

teniposide

may decrease the levels of serum concentrations

ziv-aflibercept

may decrease the levels of serum concentration

dacomitinib

may decrease the levels of serum concentration

pacritinib

may decrease the levels of serum concentration

asciminib

may decrease the levels of serum concentration

pemigatinib

may decrease the levels of serum concentration

dexamethasone 

It may enhance the metabolism when combined with dexamethasone

brentuximab

is having an antagonistic impact over brentuximab vedotin by showing altered intestinal/hepatic CYP3A4 enzyme metabolism.

cabazitaxel

increases serum level of cabazitaxel by affecting the enzyme CYP3A4

mibefradil

may enhance the hypotensive effect of blood Pressure Lowering Agents

indoramin

may enhance the hypotensive effect of blood Pressure Lowering Agents

amlodipine/atorvastatin

may enhance the hypotensive effect of blood Pressure Lowering Agents

terazosin

may enhance the hypotensive effect of blood Pressure Lowering Agents

atenolol

may enhance the hypotensive effect of blood Pressure Lowering Agents

valproate

valproate increases the concentration of serum barbiturates in the serum

iloprost 

may increase the hypotensive effect of antihypertensives

nisoldipine 

may increase the hypotensive effect

acebutolol 

may increase the hypotensive effect of anti-hypertensives

amlodipine/telmisartan 

may increase the hypotensive effect of blood pressure-lowering agents

hydrochlorothiazide/aliskiren 

may increase the hypotensive effect of blood pressure-lowering agents

amlodipine/olmesartan 

may increase the hypotensive effect of blood pressure-lowering agents

lisinopril/hydrochlorothiazide 

may increase the hypotensive effect of blood pressure-lowering agents

eprosartan/hydrochlorothiazide 

may increase the hypotensive effect of blood pressure-lowering agents

valsartan/hydrochlorothiazide 

may increase the hypotensive effect of blood pressure-lowering agents

acetaminophen 

may enhance the metabolism of primidone

amlodipine 

may diminish the serum concentration of CYP3A4 inducers

atorvastatin 

may diminish the serum concentration of CYP3A4 inducers

benperidol 

may diminish the serum concentration of CYP3A4 inducers

bisoprolol 

may diminish the serum concentration of CYP3A4 inducers

cabazitaxel 

may diminish the serum concentration of CYP3A4 inducers

calcifediol 

may diminish the serum concentration of CYP3A4 inducers

carbamazepine 

may diminish the serum concentration of CYP3A4 inducers

chlorpropamide 

may diminish the serum concentration of CYP3A4 inducers

clonazepam 

may diminish the serum concentration of CYP3A4 inducers

escitalopram 

may diminish the serum concentration of CYP3A4 inducers

captopril/hydrochlorothiazide

may have an increased hypotensive effect when combined with anti-hypertensive agents

mibefradil

may have an increased hypotensive effect when combined with anti-hypertensive agents

indoramin

may have an increased hypotensive effect when combined with anti-hypertensive agents

minoxidil topical

may have an increased hypotensive effect when combined with anti-hypertensive agents

amlodipine/atorvastatin

may have an increased hypotensive effect when combined with anti-hypertensive agents

clofazimine 

may enhance the serum concentration when combined with CYP3A4 substrates

doxercalciferol 

may enhance serum concentrations when combined with doxercalciferol

itraconazole 

may decrease the level of serum concentrations of itraconazole

selpercatinib 

may diminish the serum concentration when combined with selpercatinib

nimodipine 

may diminish the serum concentration when combined with nimodipine

upadacitinib 

may diminish the serum concentration when combined with upadacitinib

cosyntropin 

may have an increased hepatotoxic effect when combined with primidone

tivozanib 

may reduce the levels of serum concentration of tivozanib

tizanidine 

may increase the hypotensive effect of blood pressure-lowering agents

lidocaine anesthetic 

may diminish the serum concentration of lidocaine

amphotericin B deoxycholate 

may increase the hypotensive effect of Blood Pressure Lowering Agents

nintedanib 

may diminish the serum concentration when combined with nintedanib

ziprasidone 

may diminish the serum concentration when combined with ziprasidone

sevoflurane 

may increase the hypotensive effect of Blood Pressure Lowering Agents

lovastatin 

may enhance the serum concentration when combined

eszopiclone 

eszopiclone: they may diminish the serum concentration of CYP3A4 Inducers

ethosuximide 

ethosuximide: they may diminish the serum concentration of CYP3A4 Inducers

hydrocodone 

hydrocodone: they may diminish the serum concentration of CYP3A4 Inducers

mefloquine 

mefloquine: they may diminish the serum concentration of CYP3A4 Inducers

meperidine 

meperidine: they may diminish the serum concentration of CYP3A4 Inducers

methadone 

methadone: they may diminish the serum concentration of CYP3A4 Inducers

alprazolam 

Strong CYP3A4 inducers may lower the serum concentration of alprazolam

amiodarone 

Strong CYP3A4 inducers may decrease serum concentrations of the active metabolite(s) of amiodarone

amifostine 

may increase the hypotensive effect of Blood Pressure Lowering Agents

triptorelin

may decrease the levels of serum concentration

elagolix

may decrease the levels of serum concentration

urofollitropin

may decrease the levels of serum concentration

gonadoreline hydrochloride

may decrease the levels of serum concentration

ganirelix acetate

may decrease the levels of serum concentration

ergonovine

may decrease the levels of serum concentration

dihydroergocristine

may decrease the levels of serum concentration

dihydroergotamine

may decrease the levels of serum concentration

ergoloid mesylate

may decrease the levels of serum concentration

ergometrine

may decrease the levels of serum concentration

buprenorphine buccal 

may enhance the serum concentration of Buprenorphine

estrogens esterified/methyltestosterone             

may diminish the serum concentration when combined

diphenoxylate/atropine

CNS depressants increases the concentration of serum barbiturates in the serum

phenobarbital

CNS depressants increases the concentration of serum barbiturates in the serum

butabarbital

CNS depressants increases the concentration of serum barbiturates in the serum

gabapentin enacarbil

CNS depressants increases the concentration of serum barbiturates in the serum

pimozide

CNS depressants increases the concentration of serum barbiturates in the serum

atomoxetine

they increase the metabolism of norepinephrine reuptake inhibitors

bupropion

they increase the metabolism of norepinephrine reuptake inhibitors

maprotiline

they increase the metabolism of norepinephrine reuptake inhibitors

solriamfetol

they increase the metabolism of norepinephrine reuptake inhibitors

viloxazine

they increase the metabolism of norepinephrine reuptake inhibitors

maprotiline

they increase the metabolism of norepinephrine reuptake inhibitors

solriamfetol

they increase the metabolism of norepinephrine reuptake inhibitors

viloxazine

they increase the metabolism of norepinephrine reuptake inhibitors

atomoxetine

they increase the metabolism of norepinephrine reuptake inhibitors

bupropion

they increase the metabolism of norepinephrine reuptake inhibitors

remifentanil

CYP3A4 inducers decrease the concentration of opioids

hydrocodone/pseudoephedrine

CYP3A4 inducers decrease the concentration of opioids

codeine

CYP3A4 inducers decrease the concentration of opioids

morphine

CYP3A4 inducers decrease the concentration of opioids

 

Dosage Forms & Strengths

Tablet

50mg

250mg

 

Seizures 

Initially:

100 - 125

mg

Orally 

at bedtime

3

days


then 100-125 mg twice a day for 3 days
following 100-125 mg thrice a day for 3 days, then 250 mg thrice to four times a day; without exceeding 2 g/day



Dose Adjustments

Dosing considerations:
Should not exceed more than 2 g/day
Do not stop abruptly, due to the chances of risk to status epilepticus
Therapeutic efficacy may take several weeks to achieve

 

Tablet

50mg

250mg

 

 

Refer to adult dosing

 

Frequency defined:

1-10%

Paresthesia

Vertigo

Dysarthria

Ataxia

Pediatric patients

Hyperactivity

Paradoxical excitement

Geriatric patients

Confusion

Excitement

Depression

 

Adverse effects that decrease with continued treatment

Ataxia

Headache

Nystagmus

Vertigo

Drowsiness

Irritability

Restlessness

Dizziness

Frequency Not Defined

Nausea

Constipation

Megaloblastic anemia

Hypocalcemia

Osteomalacia

Stevens-Johnson syndrome

Acute psychosis

Vomiting

Diarrhea

Hepatotoxicity

Rickets

Rash

 

Black box warning:

primidone has been associated with an increased risk of suicidal thoughts and behaviour. This risk may be higher in patients with a history of depression or other psychiatric disorders.

 

Contraindications:

  • Hypersensitivity: primidone is contraindicated in patients who have a known hypersensitivity to the drug or its components. Hypersensitivity reactions can range from mild rash to more severe symptoms like anaphylaxis.
  • Porphyria: primidone is contraindicated in patients with porphyria, a rare genetic disorder that affects the production of heme, an essential component of hemoglobin. The use of primidone can trigger a porphyria attack, which can be life-threatening.
  • Liver disease: primidone can cause liver damage, and it is contraindicated in patients with significant liver impairment or active liver disease. Patients having history of liver disease or who are taking other medications that can cause liver damage should be monitored closely for signs of liver dysfunction.
  • Respiratory depression: primidone can cause respiratory depression, especially when it is taken in combination with other medications that depress the central nervous system. Patients who are at risk for respiratory depression, or who are taking other respiratory depressants, should be monitored closely.
  • Depression and suicidal ideation: primidone has an increased risk of suicidal thoughts and behavior, especially in patients with a history of depression or other psychiatric disorders.
  • Pregnancy and breastfeeding: primidone should be used with caution while pregnancy and breastfeeding, as it can cross the placenta and enter into breast milk. The medication can cause harm to the developing fetus or nursing infant, and the benefits and risks should be carefully considered before use.
  • Renal impairment: primidone is primarily eliminated by the kidneys, and patients with significant renal impairment may require a dosage adjustment to prevent accumulation of the drug.

Caution:

  • Drug interactions: primidone can interact with other medications, including other anticonvulsants, benzodiazepines, and some antidepressants. These interactions can alter the effectiveness and safety of primidone, and patients should be monitored closely for potential side effects or changes in therapeutic response.
  • Cardiovascular disease: primidone can cause changes in heart rate and blood pressure, and patients with a history of cardiovascular disease should be monitored closely while taking the medication.
  • Elderly patients: Elderly patients may be more susceptible to the sedative and cognitive side effects of primidone, and a lower starting dose may be required. These patients should also be monitored closely for signs of overdose or other adverse effects.
  • Withdrawal symptoms: Abrupt discontinuation of primidone can cause withdrawal symptoms, including seizures, anxiety, and tremors. Patients should be gradually tapered off the medication to avoid these symptoms.
  • Blood disorders: primidone can cause blood disorders, including leukopenia, thrombocytopenia, and anemia. Patients should be closely monitored of these disorders, including fever, sore throat, and easy bruising or bleeding.
  • Alcohol use: Alcohol can increase the sedative effects of primidone and can also increase the risk of liver damage. Patients should stop taking alcohol while taking primidone.
  • Use in children: primidone is generally safe and effective in children, but caution should be exercised in young children, particularly those under the age of 5, who may be more sensitive to the sedative and cognitive side effects of the medication.

Comorbidities:

  • Liver disease: primidone is metabolized by the liver, so it may be contraindicated or require dose adjustment in patients with liver disease.
  • Respiratory depression: primidone can cause respiratory depression, particularly in patients with respiratory disease or other conditions that impair lung function.
  • Cardiovascular disease: Primidone may cause changes in blood pressure and heart rate, so it should be used with caution in patients suffering from cardiovascular disease.
  • Porphyria: primidone can trigger acute attacks of porphyria, a rare genetic disorder that affects the production of heme in the body.
  • Depression or suicidal thoughts: primidone can cause depression and increase the risk of suicidal thoughts or behaviours, particularly in patients with a history of depression or other mental health conditions.
  • Renal impairment: primidone and its metabolites are primarily excreted by the kidneys, so dose adjustment may be necessary in patients with renal impairment.

Pregnancy consideration: category D

Lactation: primidone can be excreted in breast milk and can be harmful to nursing infants. 

Pregnancy category:

  • Category A: Satisfactory and well-controlled studies show no risk to the fetus in the first or later trimester.
  • Category B: There is no evidence of risk to the fetus found in animal reproduction studies and there are not enough studies on pregnant women.
  • Category C: Adverse effects on the fetus found with evidence in animal reproduction studies and no adequate evidence for an effect in humans, care must be taken for potential risks in pregnant women
  • Category D: There is adequate data available with sufficient evidence of human fetal risk from various platforms, but despite potential risks may be used only in emergency cases for potential benefits.
  • Category X: Drugs listed in this category outweigh risks over benefits These category drugs should be prohibited for pregnant women.
  • Category N: There is no data available for the drug under this category.

 

Pharmacology:

The mechanism of action of primidone and its metabolites is not well understood, but it is believed to be related to their ability to increase the activity of gamma-aminobutyric acid (GABA), a neurotransmitter that inhibits the activity of neurons in the brain. This results in a decrease in the excitability of neurons, which can reduce the occurrence of seizures.

Pharmacodynamics:

The pharmacodynamics of primidone are related to its effects on the central nervous system (CNS), where it acts as an anticonvulsant and antiepileptic medication. By enhancing the activity of GABA, primidone reduces the excitability of neurons, which can reduce the occurrence of seizures.

Pharmacokinetics:

Absorption: primidone is well absorbed from the gastrointestinal tract after oral administration. The time to reach peak plasma concentration is usually 3 hours.

Distribution: primidone is widely distributed throughout the body, and it crosses the blood-brain barrier to exert its effects on the central nervous system. It is approximately 20% to 25% bound to plasma proteins.

Metabolism: primidone undergoes hepatic metabolism, primarily via the cytochrome P450 system. It is metabolized to its active metabolites, phenobarbital and phenylethylmalonamide (PEMA), both of which have anticonvulsant properties.

Elimination: primidone and its metabolites are primarily eliminated by the liver and excreted in the urine. The elimination half-life of primidone is approximately 10-12 hours.

 

Administration:

primidone is usually administered orally in the form of tablets. The tablets are typically taken with or without food, and they should be swallowed whole with a glass of water.

The dosage of primidone is usually determined based on the patient’s weight and the severity of their condition. The medication is typically administered in divided doses, with the goal of maintaining a therapeutic level of the medication in the bloodstream.

 

Patient information leaflet

Generic Name: primidone

Pronounced: (prim-i-done)

Why do we use promidone?

primidone is an anticonvulsant medication that is primarily used to treat seizures, including partial seizures and generalized tonic-clonic seizures. It is used in the treatment of essential tremor, a neurological disorder characterized by involuntary shaking of the hands, head, and voice.

In the treatment of seizures, primidone is often used in combination with other anticonvulsant medications to help control the frequency and severity of seizures. It may also be used as a single therapy in some cases.

 

ADVERTISEMENT 

primidone

Brand Name :

Mysoline

Synonyms :

primidone

Class :

Barbiturate anticonvulsants




No data available for drug.

Dosage Forms & Strengths

Tablet

50mg

250mg

 

seizures 

Initially:

100 - 125

mg

Orally 

at bedtime

3

days


then 100-125 mg twice a day for 3 days
following 100-125 mg thrice a day for 3 days, then 250 mg thrice to four times a day; without exceeding 2 g/day



Dose Adjustments

Dosing considerations:
Should not exceed more than 2 g/day
Do not stop abruptly, due to the chances of risk to status epilepticus
Therapeutic efficacy may take several weeks to achieve

Tablet

50mg

250mg

 

Refer to adult dosing

 

DRUG INTERACTION

primidone

&

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  • alogliptin/pioglitazone
  • anthralin
  • pirtobrutinib
  • gabapentin
  • galsulfase
  • gadoterate meglumine
  • ferric gluconate
  • ferric derisomaltose
  • ethanolamine oleate
  • eteplirsen
  • vasopressin
  • desmopressin
  • meropenem/vaborbactam
  • ecallantide
  • econazole topical
  • dornase alfa
  • aspirin/dipyridamole
  • dipyridamole
  • difenoxin and atropine
  • diflorasone
  • difluprednate ophthalmic
  • eptinezumab
  • diethylpropion
  • dexchlorpheniramine
  • dexmethylphenidate
  • serdexmethylphenidate/​dexmethylphenidate
  • bexagliflozin
  • galcanezumab
  • fremanezumab
  • tapinarof topical
  • darifenacin
  • dalbavancin
  • darbepoetin alfa
  • azilsartan
  • colestipol
  • corticorelin
  • crotamiton
  • crofelemer
  • allogeneic cultured keratinocytes/fibroblasts in bovine collagen
  • tapentadol
  • cyclopentolate
  • polymyxin B/bacitracin topical
  • ketoconazole topical
  • tavaborole
  • tagraxofusp
  • crisaborole
  • crizanlizumab
  • satralizumab
  • spinosad
  • sacubitril/valsartan
  • sargramostim
  • sebelipase alfa
  • regadenoson
  • ribociclib/letrozole
  • ragweed allergen extract
  • radium-223 dichloride
  • secnidazole
  • setmelanotide
  • polycarbophil
  • plecanatide
  • sacituzumab govitecan
  • pertuzumab
  • pertuzumab/trastuzumab/hyaluronidase
  • pamidronate
  • halcinonide
  • glecaprevir/​pibrentasvir
  • glucarpidase
  • golodirsen
  • dextrose (antidote)
  • hexaminolevulinate
  • iohexol
  • ferric citrate
  • elapegademase
  • emicizumab
  • erenumab
  • danaparoid
  • dantrolene
  • eflapegrastim
  • edaravone
  • amcinonide
  • carglumic acid
  • alcaftadine ophthalmic
  • agalsidase beta
  • afamelanotide
  • fosdenopterin
  • lidocaine and chlorhexidine
  • levorphanol
  • calcifediol
  • factor VIIa, recombinant
  • triheptanoin
  • peanut oral allergen powder
  • teprotumumab
  • poly-L-lactic acid/carboxymethylcellulose/mannitol
  • xenon Xe 129 hyperpolarized
  • ublituximab
  • anacaulase
  • glatiramer
  • peginterferon beta-1a
  • interferon beta-1a
  • onabotulinumtoxinA
  • cycloserine
  • ethionamide
  • cabotegravir and rilpivirine
  • vericiguat
  • omidenepag isopropyl
  • azelastine/fluticasone intranasal
  • benzyl peroxide
  • vutrisiran
  • brimonidine
  • testosterone topical
  • lenacapavir
  • tebentafusp
  • mosunetuzumab
  • faricimab
  • ganirelix
  • nadofaragene firadenovec
  • ozenoxacin
  • guaifenesin
  • adagrasib
  • guselkumab
  • adalimumab-aacf
  • nonoxynol-9
  • nifurtimox
  • nusinersen
  • nitazoxanide
  • mavacamten
  • calcipotriene
  • bimatoprost
  • obinutuzumab
  • amifostine
  • oxycodone/​aspirin
  • oxycodone/ibuprofen
  • oteseconazole
  • oxychlorosene
  • porfimer
  • pramoxine /hydrocortisone topical
  • podofilox
  • quinapril/hydrochlorothiazide
  • acetaminophen/pamabrom/pyrilamine
  • levobunolol
  • paregoric
  • idursulfase
  • lesinurad and allopurinol
  • latanoprost/​netarsudil ophthalmic
  • lactase enzyme
  • bioadherent oral
  • latanoprost and timolol
  • latanoprostene bunod
  • ledipasvir/sofosbuvir
  • imipenem/cilastatin/relebactam
  • imipenem/cilastatin
  • hemin
  • deucravacitinib
  • house dust mite allergen extract
  • halobetasol topical/tazarotene
  • remimazolam
  • somatropin
  • remifentanil
  • ethotoin
  • etidronate
  • empagliflozin, linagliptin, and metformin
  • elvitegravir/cobicistat/emtricitabine/tenofovir AF
  • empagliflozin/​linagliptin
  • evinacumab
  • finasteride and tadalafil
  • flortaucipir (18F)
  • proparacaine/ fluorescein ophthalmic
  • fluorescein/benoxinate ophthalmic
  • fluphenazine
  • alogliptin/​metformin
  • alogliptin/pioglitazone
  • alitretinoin topical
  • dextrose/ sodium citrate/fructose
  • dasabuvir
  • ombitasvir​/paritaprevir/​ritonavir
  • hydrocodone/​chlorpheniramine/​pseudoephedrine
  • hydroxyamphetamine/​tropicamide
  • acamprosate
  • gadobutrol
  • teclistamab
  • tremelimumab
  • futibatinib
  • etranacogene dezaparvovec
  • olutasidenib
  • naproxen and diphenhydramine
  • naratriptan
  • gadopiclenol
  • gadoxetate
  • gadoversetamide
  • naphazoline/pheniramine
  • naphazoline
  • nalbuphine
  • vosoritide
  • vitamin K1 (phytonadione)
  • moxidectin
  • basiliximab
  • fecal microbiota, live-jslm
  • ibuprofen/famotidine
  • famotidine
  • raxibacumab
  • omalizumab
  • measles, mumps, rubella, and varicella vaccine, live (Rx)
  • senna/docusate
  • dinoprostone
  • measles mumps and rubella vaccine, live
  • immune globulin IM (IGIM)
  • dyclonine
  • doravirine, lamivudine, and tenofovir disoproxil fumarate
  • elexacaftor/tezacaftor/ivacaftor
  • ivacaftor/tezacaftor
  • treosulfan
  • tranexamic acid
  • norethindrone acetate/​estradiol/​elagolix
  • artesunate
  • trientine
  • trifarotene
  • ziconotide
  • vonoprazan/amoxicillin/clarithromycin
  • pyrithione zinc
  • zinc oxide topical
  • naphazoline/​zinc sulfate/​glycerin ophthalmic
  • voretigene neparvovec
  • nirmatrelvir/ritonavir
  • bebetelovimab
  • sodium chloride
  • relugolix/​estradiol/​norethindrone
  • defibrotide
  • prothionamide
  • liraglutide
  • etilfrine
  • alpha-lipoic acid
  • ramosetron
  • olodaterol/tritropium
  • cimetropium
  • umeclidinium
  • itopride
  • secretin
  • naftopidil
  • trimeprazine
  • benperidol
  • chlormethiazole
  • multivitamins
  • secukinumab
  • glycopyrrolate inhaled and formoterol
  • amitriptyline and chlordiazepoxide
  • tirzepatide
  • relugolix/estradiol/norethindrone
  • mupirocin
  • alvimopan
  • chlordiazepoxide
  • insulin regular human
  • insulin aspart protamine/​insulin aspart
  • insulin isophane human/​insulin regular human
  • insulin degludec/insulin aspart
  • teplizumab
  • chlordiazepoxide/clidinium
  • aspirin, sodium bicarbonate, and citric acid
  • aluminum hydroxide, magnesium hydroxide, and simethicone
  • glycopyrrolate inhaled
  • olodaterol/tiotropium
  • umeclidinium bromide
  • timolol/dorzolamide
  • travoprost ophthalmic
  • loxapine
  • eptifibatide
  • hydrocodone/acetaminophen
  • omega 3 fatty acids
  • trandolapril/​verapamil
  • abciximab
  • artificial saliva
  • diphtheria, hepatitis B, pertussis (acellular), polio, and tetanus vaccine
  • diphtheria, haemophilus B, pertussis, polio, tetanus vaccine
  • haemophilus influenzae type b vaccine/hepatitis b vaccine
  • butalbital/aspirin/caffeine 
  • colchicine/probenecid
  • atovaquone and proguanil
  • ursodiol
  • chenodiol
  • casirivimab/imdevimab
  • tixagevimab/cilgavimab
  • molnupiravir
  • bebtelovimab
  • calcium, magnesium, potassium and sodium oxybate
  • sodium oxybate
  • diphtheria, polio, pertussis acellular, tetanus vaccine
  • pseudoephedrine loratadine
  • sodium chloride nasal
  • hydroxychloroquine sulfate
  • atorvastatin and ezetimibe
  • teriparatide
  • alendronate and cholecalciferol
  • alprostadil (IV)
  • romosozumab
  • risedronate
  • alendronate
  • glyburide/metformin
  • clorazepate
  • rosuvastatin/​ezetimibe
  • paclitaxel/encequidar
  • valsartan/amlodipine
  • enalapril/hydrochlorothiazide
  • enalapril and felodipine
  • amiloride/hydrochlorothiazide
  • triamterene/hydrochlorothiazide
  • lisinopril/hydrochlorothiazide
  • tegaserod
  • rhein
  • ritanserin
  • sulfaphenazole
  • sulconazole
  • taurursodiol
  • bromeperidol
  • carbapenems
  • fotemustine
  • difelikefalin
  • bromopride
  • alizapride
  • olopatadine
  • oxomemazine
  • paraldehyde
  • oxcarbazepine
  • kratom
  • elexacaftor
  • oritavancin
  • miocamycin
  • curcumin sulfate
  • seproxetine
  • clotrimazole
  • remacemide
  • piperine
  • ditiocarb
  • danoprevir
  • oxetacaine
  • topiroxostat
  • indisulam
  • tofisopam
  • noscapine
  • thiopental
  • tioconazole
  • nicotinamide
  • rutin
  • mequitazine
  • somatostatin
  • vapreotide
  • econazole
  • saracatinib
  • lestaurtinib
  • efonidipine
  • zimelidine
  • indalpine
  • desvenlafaxine
  • benidipine
  • dapoxetine
  • tesmilifene
  • pergolide
  • sitaxentan
  • resveratrol
  • bifonazole
  • tildipirosin
  • solithromycin
  • selamectin
  • imiquimod topical
  • fluorouracil topical
  • peginterferon alfa-2b
  • interferon alfa-2b
  • alteplase
  • tanshinone I
  • rosmarinic acid
  • caryophyllene
  • ursolic acid
  • cepharanthine
  • veliflapon
  • mirikizumab
  • cp-96345
  • famprofazone
  • peoniflorin
  • fepradinol
  • licofelone
  • polmacoxib
  • ebselen
  • taxifolin
  • betulinic acid
  • flurbiprofen axetil
  • talniflumate
  • morniflumate
  • nitroaspirin
  • firocoxib
  • ns-398
  • cimicoxib
  • robenacoxib
  • sc-236
  • imidazole salicylate
  • trolamine salicylate
  • pirprofen
  • benorilate
  • ethenzamide
  • mofebutazone
  • proquazone
  • carbaspirin calcium
  • guacetisal
  • proglumetacin
  • propyphenazone
  • pranoprofen
  • bendazac
  • tenidap
  • lonazolac
  • nifenazone
  • flunoxaprofen
  • difenpiramide
  • feprazone
  • bufexamac
  • alminoprofen
  • suxibuzone
  • fentiazac
  • tinoridine
  • tepoxalin
  • indobufen
  • flunixin
  • propacetamol
  • clonixin
  • droxicam
  • epirizole
  • etofenamate
  • ibuproxam
  • indoprofen
  • kebuzone
  • felbinac
  • zaltoprofen
  • azapropazone
  • zomepirac
  • niflumic acid
  • magnesium salicylate
  • suprofen
  • nepafenac
  • bromfenac
  • ciprofloxacin and hydrocortisone (otic) (Rx)
  • hydrocortisone/neomycin/polymyxin otic (Rx)
  • vigabatrine
  • valproate
  • tezepelumab (Rx)
  • triamcinolone acetonide/nystatin
  • triamcinolone suprachoroidal (Rx)
  • triamcinolone, intranasal
  • ciclesonide inhaled
  • diosmin
  • tirbanibulin
  • padeliporfin
  • roxadustat
  • aminosalicylic acid
  • rasburicase
  • tetracaine
  • articaine
  • ropivacaine
  • nitrous oxide
  • sulfapyridine
  • sulfanilamide
  • mafenide
  • isometheptene
  • amyl nitrite
  • antipyrine
  • isosorbide dinitrate
  • prilocaine
  • nitroglycerin
  • tobacco
  • batefenterol
  • hexoprenaline
  • pf-00610355
  • racepinephrine
  • protokylol
  • doxofylline
  • phenylpropanolamine
  • isoetharine
  • ephedra sinica root
  • dipivefrin
  • arbutamine
  • norepinephrine
  • fenoterol
  • clenbuterol
  • pirbuterol
  • epinephrine
  • ritodrine
  • procaterol
  • orciprenaline
  • bitolterol
  • abediterol
  • fluticasone furoate, umeclidinium and vilanterol
  • fluticasone furoate and vilanterol
  • mometasone and formoterol
  • pramoxine topical (OTC)
  • menthol/pramoxine (topical)
  • tetrastarch
  • plasma protein fraction
  • hetastarch
  • rokitamycin
  • ridaforolimus
  • oleandomycin
  • patupilone
  • mitemcinal
  • midecamycin
  • mirvetuximab soravtansine
  • lorvotuzumab mertansine
  • kitasamycin
  • flurithromycin
  • eprinomectin
  • epofolate
  • epothilone D
  • coltuximab ravtansine
  • dirithromycin
  • doramectin
  • cethromycin
  • carbomycin
  • paramethasone
  • dexamethasone isonicotinate
  • quinupristin
  • sarilumab
  • dalfopristin
  • curcumin
  • luliconazole
  • procaine
  • chloroprocaine
  • phencyclidine
  • tenocyclidine
  • profenamine
  • halothane
  • lfenprodil
  • calcium levulinate
  • agmatine
  • calcium pangamate
  • calcium glubionate
  • edodekin alfa
  • beloranib
  • aflibercept
  • endostar
  • volociximab
  • roquinimex
  • anecortave acetate
  • squalamine
  • brolucizumab
  • trebananib
  • semaxanib
  • endostatin
  • halofuginone
  • resveratol
  • ranibizumab
  • fumagilin
  • bevacizumab
  • hyperforin
  • aminohippuric acid
  • opicapone
  • pafolacianine
  • bempedoic acid
  • belantamab mafodotin
  • prasterone
  • glecaprevir
  • levomenol
  • parachlorophenol
  • gadoxetic acid
  • cholecystokinin
  • caspofungin
  • ouabain
  • rifampicin
  • taurocholic acid
  • methylphosphinic acid
  • revefenacin
  • isoprenaline
  • posiphen
  • acotiamide
  • triflupromazine
  • pegvisomant
  • pipecuronium
  • regramostim
  • phenserine
  • diethylcarbamazine
  • cinchocaine
  • pancuronium
  • bambuterol
  • hexafluronium
  • aprotinin
  • tyrothricin
  • decamethonium
  • ipidacrine
  • tubocurarine
  • paraoxon
  • ginkgo biloba
  • methanesulfonyl fluoride
  • dichlorvos
  • fenthion
  • metrifonate
  • coumaphos
  • huperzine A
  • distigmine
  • neostigmine
  • isoflurophate
  • tasosartan
  • fimasartan
  • methylthioninium
  • minaprine
  • gallamine triethiodide
  • ambenonium
  • abiraterone
  • mibefradil
  • hydrocortisone (systemic)
  • cetirizine (systemic)
  • Talimogene Laherparepvec
  • Diacerein
  • Magnesium glucoheptonate
  • acyclovir and hydrocortisone
  • acyclovir (ophthalmic)
  • acyclovir (topical)
  • docosanol cream
  • camphor and phenol
  • dolutegravir, abacavir, and lamivudine
  • peramivir
  • lisdexamfetamine
  • ergoloid mesylates
  • memantine/donepezil
  • tranylcypromine
  • isocarboxazid
  • methenamine/sodium salicylate/benzoic acid
  • mometasone topical (Rx)
  • Esketamine intranasal
  • Oracit
  • Shohls Solution
  • sodium lactate
  • sodium citrate
  • lecanemab
  • donepezil (Rx)
  • donepezil transdermal
  • sodium thiosulfate
  • ciclopirox
  • undecylenic acid
  • butenafine
  • calcium and vitamin D
  • zoledronic acid
  • calcitonin salmon
  • pizotifen
  • indoramin
  • salicylic acid acne
  • minoxidil topical
  • adapalene
  • orlistat
  • COVID-19 subunit vaccine
  • amoxicillin /vonoprazan
  • levamlodipine (Rx)
  • Omeprazole, amoxicillin, and clarithromycin
  • simvastatin/ezetimibe
  • amlodipine/atorvastatin
  • amoxicillin and clavulanate potassium
  • lansoprazole, amoxicillin, and clarithromycin
  • noradrenaline
  • carbaryl
  • botulinum toxin
  • atropine
  • artemether/lumefantrine
  • ergonovine
  • bunazosin (Not available in the United States)
  • ibalizumab
  • dolutegravir
  • hydrocodone/pseudoephedrine
  • cetirizine/pseudoephedrine
  • acetaminophen/dextromethorphan/pseudoephedrine/guaifenesin
  • acetaminophen IV/ibuprofen IV (Pending FDA Approval)
  • medroxyprogesterone
  • acetaminophen/caffeine
  • Acetaminophen/magnesium salicylate/pamabrom
  • megestrol
  • pyridoxine (vitamin B6)
  • folic acid-cyanocobalamin-pyridoxine
  • L-methylfolate-pyridoxal 5′-phosphate-methylcobalamine
  • estropipate
  • betamethasone (systemic)
  • dolutegravir and lamivudine
  • zidovudine and lamivudine
  • mineral oil (oral/rectal)
  • regular insulin
  • dextromethorphan/bupropion
  • diphenhydramine/ibuprofen
  • enfuvirtide
  • doxapram
  • methamphetamine
  • dextroamphetamine
  • ephedrine
  • brompheniramine, dextromethorphan and phenylephrine
  • aspirin, chlorpheniramine, and phenylephrine
  • acetaminophen, pheniramine, and phenylephrine
  • chlorpheniramine and phenylephrine
  • guaifenesin and phenylephrine
  • rivastigmine
  • pyridostigmine
  • arecoline
  • physostigmine
  • abobotulinumtoxinA
  • echothiophate iodide
  • malathion
  • glibenclamide
  • rimabotulinumtoxinB
  • pioglitazone
  • daxibotulinumtoxinA
  • prabotulinumtoxinA
  • mepenzolate
  • trospium
  • modafinil
  • budesonide (oral inhalation)
  • budesonide (nasal)
  • budesonide (Topical)
  • vedolizumab
  • hydrocodone and homatropine
  • homatropine ophthalmic
  • methscopolamine
  • oxandrolone
  • nandrolone
  • fluoxymesterone
  • procyclidine
  • biperiden
  • benztropine
  • oxymetholone
  • ipratropium
  • belladonna/opium
  • pilocarpine
  • nicotine intranasal
  • succinylcholine
  • cromolyn sodium
  • mepolizumab
  • palivizumab
  • reslizumab
  • dupilumab
  • potassium iodide
  • beclomethasone (nasal)
  • tetrahydrozoline nasal
  • fluticasone (topical)
  • tecovirimat
  • entacapone
  • vaccinia immune globulin intravenous (Rx)
  • smallpox (vaccinia) vaccine, live
  • terazosin
  • labetalol 
  • smallpox and monkeypox vaccine (live, nonreplicating) (US: Availability limited to health department/CDC expanded access protocol) (Rx)
  • oxymetazoline
  • xylometazoline
  • meclizine
  • prazosin
  • belinostat
  • nabilone
  • tripelennamine
  • bismuth subcitrate, metronidazole and tetracycline
  • levalbuterol
  • rifaximin
  • cotrimoxazole
  • ethacrynic acid
  • senna
  • bisacodyl
  • sodium picosulfate, citric acid, and magnesium oxide
  • kaolin
  • anastrozole
  • docusate
  • cascara
  • dichlorphenamide
  • bismuth subsalicylate
  • methylcellulose
  • magnesium sulfate 
  • talazoparib
  • diphenoxylate/atropine
  • bacillus clausii
  • psyllium
  • bifidobacterium
  • lactobacillus
  • saccharomyces boulardii
  • lanreotide
  • cyproterone
  • ramucirumab (Rx)
  • fidaxomicin
  • tobramycin (systemic)
  • dacomitinib
  • pembrolizumab
  • amikacin (systemic)
  • panitumumab
  • blinatumomab
  • durvalumab
  • olaratumab
  • necitumumab
  • moxetumomab pasudotox
  • mogamulizumab
  • inotuzumab
  • dinutuximab
  • pentamycin
  • dibekacin
  • cemiplimab
  • gemtuzumab
  • demeclocycline
  • omadacycline
  • tobramycin (ophthalmic)
  • sarecycline
  • cefiderocol
  • valrubicin
  • plicamycin
  • denileukin diftitox
  • decitabine
  • niraparib
  • methacholine
  • carbachol
  • bethanechol
  • acetylcholine
  • atezolizumab
  • raloxifene
  • avelumab
  • leucovorin
  • cladabrine
  • pralatrexate
  • meclofenamate
  • pemetrexed
  • ustekinumab
  • diroximel fumarate
  • daratumumab
  • coccidioidin skin test
  • candida albicans extract
  • brewer’s yeast
  • poliovirus vaccine, live, trivalent
  • elotuzumab
  • trimetrexate
  • l-methyl folate
  • methyclothiazide
  • Influenza virus vaccine
  • acitretin
  • tafamidis
  • sapropterin
  • Pidotimod
  • nitisinone
  • mipomersen
  • levetiracetam
  • Inebilizumab
  • Diethylamine salicylate
  • COVID-19 vaccine
  • Cephalothin
  • alitretinoin
  • Alitretinoin
  • methotrexate
  • verteporfin
  • omacetaxine
  • methyl aminolevulinate topical
  • efgartigimod alfa
  • aminolevulinic acid
  • cetuximab
  • streptozocin
  • zoster vaccine recombinant
  • lyme disease vaccine
  • human papillomavirus vaccine
  • daclizumab
  • lomustiine
  • amitriptyline
  • triptorelin
  • Tedizolid
  • rituximab
  • darolutamide
  • altretamine
  • Varicella-zoster vaccine
  • topotecan
  • ajmaline
  • pneumococcal vaccine
  • poliovirus vaccine
  • adenovirus vaccine type 7
  • adenovirus vaccine type 4
  • brincidofovir
  • lenograstim
  • ofatumumab
  • doxorubicin
  • thioguanine
  • tetanus toxoid
  • primidone
  • lipegfilgrastim
  • pegaspargase
  • monomethyl fumarate
  • ibritumomab
  • dimethyl fumarate
  • varicella-zoster vaccine (recombinant)
  • influenza virus vaccine, h5n1, live
  • carmustine
  • influenza virus vaccine (h5n1), adjuvanted
  • influenza a (h5n1) vaccine
  • eluxadoline
  • influenza virus vaccine quadrivalent, adjuvanted
  • idecabtagene vicleucel
  • adenovirus types 4 and 7 live, oral
  • thiotepa
  • tocilizumab
  • levodopa inhaled
  • efalizumab
  • canakinumab
  • aminoglutethimide
  • ado-trastuzumab emtansine
  • adenovirus vaccine
  • zoster vaccine live
  • typhoid vaccine, live
  • influenza virus vaccine, live, trivalent
  • influenza virus vaccine, h1n1, live
  • delavirdine
  • paclitaxel
  • siltuximab
  • miconazole
  • fludarabine
  • epirubicin
  • vinblastine
  • lomustine
  • risankizumab
  • rilonacept
  • pacritinib
  • linezolid
  • griseofulvin
  • vincristine
  • rufinamide
  • phenobarbital
  • nelarabine
  • mitoxantrone
  • mitomycin
  • mitapivat
  • letermovir
  • lasmiditan
  • idarubicin
  • filgrastim
  • elagolix
  • daunorubicin
  • daclatasvir
  • carfilzomib
  • anakinra
  • alefacept
  • thalidomide
  • teriflunomide
  • rubella virus vaccine
  • ozanimod
  • mumps virus vaccine
  • measles virus vaccine
  • golimumab
  • etanercept
  • certolizumab
  • adalimumab
  • etoposide
  • mechlorethamine
  • adenovirus type 7 vaccine
  • melphalan
  • palifermin
  • pimecrolimus
  • ropeginterferon alfa 2b
  • tacrolimus
  • tofacitinib
  • amphotericin B cholesteryl sulfate
  • amphotericin B deoxycholate
  • amphotericin B liposomal
  • amphotericin B phospholipid complex
  • anthrax vaccine adsorbed
  • denosumab
  • diphtheria & tetanus toxoids
  • echinacea
  • haemophilus influenzae type b vaccine
  • hepatitis A vaccine inactivated
  • hepatitis a/b vaccine
  • hepatitis b vaccine
  • HIV vaccine
  • human papillomavirus vaccine, quadrivalent
  • hydroxyurea
  • influenza virus vaccine (H5N1)
  • influenza virus vaccine trivalent
  • influenza virus vaccine trivalent, adjuvanted
  • influenza virus vaccine trivalent, recombinant
  • meningococcal A C Y and W-135 diphtheria conjugate vaccine
  • meningococcal A C Y and W-135 polysaccharide vaccine combined
  • meningococcal group B vaccine
  • ofatumumab SC
  • pneumococcal vaccine 13-valent
  • pneumococcal vaccine heptavalent
  • pneumococcal vaccine polyvalent
  • poliovirus vaccine inactivated
  • rabies vaccine
  • sipuleucel-T
  • trastuzumab
  • trastuzumab deruxtecan
  • eslicarbazepine acetate
  • vitamin A
  • rifampin
  • belzutifan
  • belimumab
  • belatacept
  • armodafinil
  • amobarbital
  • alemtuzumab
  • ocrelizumab
  • nivolumab
  • natalizumab
  • fingolimod
  • desogestrel
  • butalbital
  • brexanolone
  • zoster vaccine
  • yellow fever vaccine
  • varicella virus vaccine
  • smallpox vaccine
  • rotavirus vaccine
  • rubella vaccine
  • influenza virus vaccine quadrivalent
  • atracurium
  • dengue vaccine
  • tisagenlecleucel
  • lisocabtagene maraleucel
  • ciltacabtagene autoleucel
  • brexucabtagene autoleucel
  • axicabtagene ciloleucel
  • chlorambucil
  • ethinyl estradiol
  • dicumarol
  • atenolol
  • anisindione
  • penicillin G benzathine
  • sequelerin
  • chloramphenicol
  • heparin
  • enoxaparin
  • dalteparin
  • bivalirudin
  • argatroban
  • willow bark
  • bazedoxifene/conjugated estrogens
  • aspirin rectal
  • aspirin/citric acid/sodium bicarbonate
  • aspirin
  • ganaxolone
  • erythromycin stearate
  • erythromycin lactobionate
  • erythromycin ethylsuccinate
  • elbasvir/grazoprevir
  • daridorexant
  • cholera vaccine
  • lumacaftor/ivacaftor
  • dienogest/estradiol valerate
  • zafirlukast
  • urofollitropin
  • tralokinumab
  • torsemide
  • tazarotene
  • pseudoephedrine
  • propoxiphene napsylate
  • propoxiphene hydrochloride
  • oxyphencyclimine hydrochloride
  • oxymetazoline hydrochloride
  • naxitamab
  • nandrolone decanoate
  • methylphenidate
  • methocarbamol
  • idoxuridine
  • hyaluronidase
  • hyaluronic acid
  • gonadoreline hydrochloride
  • glycopyrrolate
  • ganirelix acetate
  • gallium citrate
  • fulvestrant
  • fexofenadine hydrochloride
  • fenefluramine hydrochloride
  • febuxostat
  • famciclovir
  • ergocalciferol
  • divalproex sodium
  • diclorfenamide
  • dezocine
  • desmopressin acetate
  • demeclocycline hydrochloride
  • defibrotide sodium
  • deferiprone
  • deferasirox
  • daunorubicin hydrochloride
  • darunavir
  • darifenacin hydrobromide
  • daptomycin
  • dapsone
  • dantrolene sodium
  • danazol
  • dalafampridine
  • dalbavancin Hydrochloride
  • daclatasvir dihydrochloride
  • dactinomycin
  • dacitabine
  • cefiderocol sulfate tosylate
  • butoconazole nitrate
  • benralizumab (Rx)
  • albuterol
  • acetylcysteine
  • acebutolol
  • acam2000
  • abrocitinib
  • abatacept
  • abametapir
  • abaloparatide
  • chloroquine
  • ferric maltol
  • lorlatinib
  • piracetam
  • timolol
  • chlorothiazide
  • ferric pyrophosphate citrate
  • lornoxicam
  • piretanide
  • tinidazole
  • chloroxylenol
  • ferric sulfate
  • lorpiprazole
  • pirfenidone
  • tiopronin
  • chlorpheniramine
  • ferrous bisglycinate
  • losartan
  • piroxicam
  • tiotropium
  • chlorpromazine
  • ferrous fumarate
  • lovastatin
  • pitavastatin
  • tipranavir
  • chlorpropamide
  • ferrous gluconate
  • loxoprofen
  • pitolisant
  • tirofiban
  • chlorprothixene
  • ferrous succinate
  • lubiprostone
  • pivampicillin
  • tisotumab vedotin
  • chlorthalidone
  • ferrous sulfate anhydrous
  • lumateperone
  • pivmecillinam
  • tixocortol
  • chlorzoxazone
  • ferumoxides
  • lumefantrine
  • plazomicin
  • tizanidine
  • abiraterone
  • cholecalciferolc
  • ferumoxsil
  • lumiracoxib
  • plerixafor
  • tobramycin (oral inhalation)
  • acalabrutinib
  • choline c 11
  • ferumoxytol
  • lurasidone
  • polatuzumab vedotin
  • tocainide
  • acarbose
  • choline magnesium trisalicylate
  • fesoterodine
  • lurbinectedin
  • polythiazide
  • tocofersolan
  • aceclofenac
  • choline salicylate
  • fexinidazole
  • lynestrenol
  • pomalidomide
  • tocopherol
  • acemetacin
  • chondroitin sulfate
  • finasteride
  • macimorelin
  • ponatinib
  • acenocoumarol
  • chromic chloride
  • finerenone (Rx)
  • macitentan
  • ponesimod
  • tolazamide
  • acetaminophen
  • chromic nitrate
  • fish oil
  • magaldrate
  • posaconazole
  • tolbutamide
  • acetazolamide
  • chromium
  • flavoxate
  • magnesium
  • potassium
  • tolcapone
  • acetohexamide
  • chromium gluconate
  • flecainide
  • magnesium carbonate
  • potassium acetate
  • tolfenamic acid
  • acetylsalicylic acid
  • chromium nicotinate
  • flibanserin
  • magnesium chloride
  • potassium bicarbonate
  • tolmetin
  • acipimox
  • chromous sulfate
  • floctafenine
  • magnesium citrate
  • potassium cation
  • tolterodine
  • aclidinium
  • ciclesonide
  • florbetaben (18f)
  • magnesium gluconate
  • potassium chloride
  • tolvaptan
  • acrivastine
  • cidofovir
  • florbetapir (18f)
  • magnesium hydroxide
  • potassium citrate
  • topiramate
  • acyclovir
  • cilazapril
  • floxuridine
  • magnesium oxide
  • potassium nitrate
  • adefovir dipivoxil
  • cilostazol
  • flucloxacillin
  • magnesium silicate
  • potassium perchlorate
  • torasemide
  • adenosine
  • cimetidine
  • fluconazole
  • potassium sulfate
  • toremifene
  • agomelatine
  • cinacalcet
  • flucytosine
  • magnesium trisilicate
  • tositumomab
  • albendazole
  • cinnarizine
  • fludeoxyglucose (18f)
  • mangafodipir
  • pralidoxime
  • trabectedin
  • albiglutide
  • cinoxacin
  • fludrocortisone
  • manidipine
  • pralsetinib
  • tramadol
  • albutrepenonacog alfa
  • ciprofibrate
  • fluindione
  • mannitol
  • pramipexole
  • trametinib
  • alclofenac
  • cisapride
  • flumazenil
  • maprotiline
  • pramlintide
  • trandolapril
  • aldesleukin
  • cisplatin
  • flumethasone
  • maraviroc
  • prasugrel
  • trastuzumab emtansine
  • alectinib
  • citalopram
  • flunarizine
  • maribavir
  • pravastatin
  • trazodone
  • alendronic acid
  • cladribine
  • flunisolide
  • mebeverine
  • prazepamb
  • treprostinil
  • alfentanil
  • clarithromycin
  • flunitrazepam
  • mecamylamine
  • praziquantel
  • tretinoin
  • alfuzosin
  • clemastine
  • fluocinolone acetonide
  • mecasermin
  • prednisolone
  • triamcinolone
  • alimemazine
  • clevidipine
  • fluocinonide
  • meclofenamic acid
  • prednisolone acetate
  • triamterene
  • aliskiren
  • clindamycin
  • fluocortolone
  • medrogestone
  • prednisolone phosphate
  • triazolam
  • allopurinol
  • clobazam
  • fluorouracil
  • medroxyprogesterone acetate
  • prednisone (Rx)
  • trichlormethiazide
  • almasilate
  • clobetasol propionate
  • fluoxetine
  • mefenamic acid
  • prednisone acetate
  • triclabendazole
  • almotriptan
  • clofarabine
  • flupentixol
  • mefloquine
  • pregabalin
  • triethylenetetramine
  • alogliptin
  • clofazimine
  • fluprednisolone
  • megestrol acetate
  • pregnenolone
  • trifluoperazine
  • alosetron
  • clofibrate
  • flurazepam
  • melatonin
  • prenylamine
  • trifluridine
  • alpelisib
  • clomipramine
  • flurbiprofen
  • meloxicam
  • pretomanid
  • trilaciclib
  • alprazolam
  • fluspirilene
  • memantine
  • primaquine
  • trilostane
  • clonidine
  • flutamide
  • menthyl salicylate
  • probenecid
  • trimebutine
  • aluminium phosphate
  • clopidogrel
  • fluticasone (nasal)
primidone + 

acenocoumarol

may increase the metabolism of vitamin K antagonists

fluindione

may increase the metabolism of vitamin K antagonists

phenindione

may increase the metabolism of vitamin K antagonists

phylloquinone

may increase the metabolism of vitamin K antagonists

warfarin

may increase the metabolism of vitamin K antagonists

maribavir 

may decrease the levels of serum concentration of maribavir

tranylcypromine

may increase the metabolism of tricyclic antidepressants

dextromethorphan/bupropion

may increase the metabolism of tricyclic antidepressants

amitriptyline

may increase the metabolism of tricyclic antidepressants

brexanolone

may increase the metabolism of tricyclic antidepressants

doxepin

may increase the metabolism of tricyclic antidepressants

protriptyline

may increase the metabolism of tricyclic antidepressants

abiraterone 

may diminish the serum concentration of CYP3A4 inducers

acalabrutinib 

may diminish the serum concentration of CYP3A4 inducers

bictegravir 

may diminish the serum concentration of primidone

canagliflozin 

may diminish the serum concentration of primidone

carmustine 

may diminish the serum concentration of primidone

clarithromycin 

may enhance serum concentrations of CYP3A4 inducers

clozapine 

may diminish the serum concentration of CYP3A4 Inducers

codeine 

may increase the CNS depressant effect of primidone

dasatinib 

may diminish the serum concentration of CYP3A4 inducers

dexamethasone 

may diminish the serum concentration of CYP3A4 inducers

nifedipine 

may decrease the serum concentration when combined with CYP3A4 Inducers (Strong)

sparsentan 

may increase or decrease the activity of this enzyme when combined with sparsentan

alfentanil 

may diminish the serum concentration when combined with alfentanil

apixaban 

may diminish the serum concentration when combined with apixaban

aripiprazole 

may diminish the serum concentration when combined with aripiprazole

aripiprazole lauroxil 

may diminish serum concentrations when combined with aripiprazole lauroxil

atogepant 

may diminish the serum concentration when combined with atogepant

belumosudil 

may diminish the serum concentration when combined with belumosudil

brexpiprazole 

may diminish the serum concentration when combined with brexpiprazole

ubrogepant 

may diminish the serum concentration when combined with ubrogepant

fenfluramine 

may diminish the serum concentration when combined with fenfluramine

brivaracetam 

CYP2C19 Inducers: they may diminish the serum concentration of brivaracetam

cabozantinib 

cabozantinib :they may diminish the serum concentration of CYP3A4 Inducers

clopidogrel 

clopidogrel: they may enhance serum concentrations of CYP2C19 Inducers

cyclosporine 

cyclosporin: they may diminish the serum concentration of CYP3A4 Inducers

diltiazem 

diltiazem: they may diminish the serum concentration of CYP3A4 Inducers

enzalutamide 

enzalutamide: they may diminish serum concentrations of the active metabolites of CYP3A4 inducers

eravacycline 

CYP3A4 inducers: they may diminish the serum concentration of eravacycline

erlotinib 

erlotinib: they may diminish the serum concentration of CYP3A4 inducers

etoposide 

etoposide: they may diminish the serum concentration of CYP3A4 inducers

exemestane 

exemestane: they may diminish the serum concentration of CYP3A4 Inducers

felodipine 

felodipine: they may diminish the serum concentration of CYP3A4 Inducers

ganaxolone 

CYP3A4 inducers: they may diminish the serum concentration of ganaxolone

buprenorphine buccal 

may increase the CNS depressant effect of Buprenorphine

sotorasib 

may diminish the serum concentration of zanubrutnib

drospirenone/ethinyl estradiol/levomefolate 

may diminish the serum concentration of Hormonal Contraceptives

buprenorphine,long-acting injection 

may increase the CNS depressant effect of Buprenorphine

rilpivirine 

it decreases the concentration of rilpivirine in the serum

ixazomib

primidone decreases the effect of ixazomib by altering intestinal/hepatic CYP3A4 enzyme metabolism

fondaparinux 

may increase the levels of each other by decreasing the metabolism

hemin 

may reduce the therapeutic effect of hemin

abemaciclib 

may reduce the level of serum concentration of abemaciclib

methyldopa/hydrochlorothiazide 

may increase the hypotensive effect of blood pressure-lowering agents

adagrasib 

may diminish the serum concentration of CYP3A4 inducers

alpelisib 

may diminish the serum concentration of CYP3A4 inducers

apremilast 

may diminish the serum concentration of CYP3A4 inducers

asunaprevir 

may diminish the serum concentration of CYP3A4 inducers

avanafil 

may diminish the serum concentration of CYP3A4 inducers

bedaquiline 

may diminish serum concentrations of CYP3A4 inducers

bortezomib 

may diminish the serum concentration of CYP3A4 inducers

cobicistat 

may diminish the serum concentration of primidone

deflazacort 

may diminish serum concentrations of CYP3A4 inducers

fexinidazole 

may enhance the serum concentration when combined with CYP3A4 substrates

glasdegib 

they decrease the concentration of glasdegib in the serum

infigratinib 

they decrease the concentration of active metabolites of infigratinib in the serum

fusidic acid 

may enhance the serum concentration when combined with CYP3A4 substrates