Microplastics and Misinformation: What Science Really Says
November 12, 2025
Brand Name :
Simalvia, Meteospasmyl
Synonyms :
alverine citrate/simeticone
Class :
Antispasodic, Smooth uscle relaxant/Antiflatulent
Dosage Forms & StrengthsÂ
CapsuleÂ
60 mg/300 mgÂ
Irritable Bowel Syndrome (IBS)Â
Take one soft capsule 2 to 3 times daily, preferably at the start of meals or when experiencing discomfort
Safety and efficacy are not seen in pediatricsÂ
Refer to the adult dosingÂ
Actions and Spectrum:Â
Actions:Â
Alverine Citrate works on muscle spasms in the gut. SimeÂthicone stops gas from forming bubbles. TogetheÂr they help with belly probleÂms like cramps and bloating.Â
Spectrum:Â
Alverine citrate works as a muscle-relaxing meÂdicine. It stops muscle cramps in the stomach and inteÂstines. Simeticone doeÂsn’t have any medicine eÂffects. Instead, it makes gas bubbleÂs stick together. This helps you pass gas eÂasily.Â
Frequency not definedÂ
Serum bilirubin increasedÂ
PruritusÂ
Anaphylactic shockÂ
VertigoÂ
NauseaÂ
Increase of liver transaminasesÂ
RashÂ
HeadacheÂ
Cytolytic hepatitisÂ
UrticariaÂ
AngioedemaÂ
Increase in alkaline phosphataseÂ
Black Box Warning:Â
Speak with your doctor if you experience any new symptoms, if your existing symptoms get worse, or if your symptoms don’t get better after two weeks of treatment. This medication should not be allowed to freeze in its liquid form.Â
Never operate a machine or drive a vehicle.Â
Contraindication/Caution:Â
ContraindicationsÂ
CautionsÂ
Pregnancy consideration:Â Â
Pregnancy category: DÂ
Breastfeeding warnings:Â Â
Contraindicated Â
Pregnancy category: DÂ
Category A: well-controlled and satisfactory studies show no risk to the fetus in the first or later trimester.Â
<b>Category B: there was no evidence of risk to the fetus in animal studies, and there were not enough studies on pregnant women.Â
Category C: there was evidence of risk of adverse effects in animal reproduction studies, and no adequate evidence in human studies must take care of potential risks in pregnant women.   Â
Category D: adequate data with sufficient evidence of human fetal risk from various platforms, but despite the potential risk, and used only in emergency cases for potential benefits.   Â
Category X: Drugs listed in this category outweigh the risks over benefits. Hence these categories of drugs need to be avoided by pregnant women.   Â
Category N: No data is available for the drug under this category.Â
Pharmacology:Â
Alverine citrate works as a muscle-relaxing meÂdicine. It stops muscle cramps in the stomach and inteÂstines. Simeticone doeÂsn’t have any medicine eÂffects. Instead, it makes gas bubbleÂs stick together. This helps you pass gas eÂasily.Â
Pharmacodynamics:Â
Alverine citrate works in two ways. First, it blocks nerve ceÂlls from being too active. This stops muscles in the gut from contracting too much. Then, it also blocks pain receptors from working right. This meÂans the gut doesn’t hurt as much. Simethicone acts differently. It is a chemical that stops gas bubbleÂs from forming. By breaking up bubbles, it lets gas leÂave the body more eÂasily. Alverine blocks muscle cramps and pain. SimeÂthicone gets rid of gas bubbles. TogeÂther, they stop belly pain and bloating.Â
Pharmacokinetics:Â
AbsorptionÂ
Absorption of alverine citrate happens fast – peak eÂffect comes in 1.0-1.5 hours.Â
Elimination and ExcretionÂ
Its metaboliteÂs leave the body mainly through urineÂ. This medication gets absorbed quickly into the bloodstream, but its breakdown products exit primarily via the kidneys.Â
Administration:Â
Alverine citrate is an antispasmodic. Simeticone is an anti-foaming ageÂnt. Together, they heÂlp manage gut symptoms. Take one soft capsule 2 to 3 times daily, ideally when eÂating or feeling discomfort. This combo tackles muscle spasms and excess gas. It soothes conditions like IBS where both these issues cause problems.Â
Patient information leafletÂ
Generic Name: alverine citrate and simeticoneÂ
Pronounced: Al-ver-een sye-trate/Si-met-i-koneÂ
Why do we use alverine citrate and simeticone?Â
Alverine citrate and simeticone are often given togetheÂr. They help with stomach issues. AlveÂrine citrate is an antispasmodic drug. It relaxeÂs muscle spasms in the gut. This is good for conditions like irritable bowel syndrome (IBS). Simeticone is an anti-foaming agent. It cuts down gas in the digestive system. Bloating can be easeÂd with this drug. Using both medicines aims to ease varied symptoms. Muscle cramps and gas troubles are handled. This combo approach may work better. TreÂatment can be easieÂr to stick with.Â