1.7

mcg

Orally

once a day

Age: >50 years old or less than 50 years with CV disease 
25-50 mcg orally once a day
Or 12.5-25 mcg every 6-8Week 
Age: >50 years with CV disease 
12.5-25 mcg orally once a day
Or 12.5-25 mcg for every 4-6weeks until the patient becomes euthyroid 
Severe Hypothyroidism 
12.5-25 mcg orally once a day
Subclinical Hypothyroidism 
1 mcg/kg orally once a day

Initially, 25-75 mcg orally each day
It increases by 25 mcg every 1-2 weeks, do not exceed 100 mcg/day
Maintenance dose- 25-75 mcg orally each day
May also use 10-12.5 mcg triiodothyronine (T3) combined with tetraiodothyronine (T4) Decrease the T4 dose by 50 mcg

Initially, 25-75 mcg orally each day
It increases by 25 mcg every 1-2 weeks, do not exceed 100 mcg/day
Maintenance dose- 25-75 mcg orally each day
May also use 10-12.5 mcg triiodothyronine (T3) combined with tetraiodothyronine (T4)
Decrease the T4 dose by 50 mcg

1 tablet Thyrolar 1/2 daily, followed by 1 tablet Thyrolar 1/4 every 2 to 3 weeks
In long-standing myxedema, a lower initial dose of 1 tab is recommended, especially if cardiovascular damage is suspected, in which further caution is advised
Maintenance: one tablet of Thyrolar 1 to 1 tablet Thyrolar 2 daily; failure to respond to tab Thyrolar 3 can suggest a lack of compliance and malabsorption.
After necessary clinical laboratory analyses of T4 bound and free TSH blood levels, adjust the dosage within the first four weeks of therapy

Age1-3 months
10-15 mcg/kg orally once a day
5-7.5 mcg/kg IV/IM once a day
For patients' risk of heart failure: 25 mcg/day
start a higher dose (50 mcg/day) as initial if serum T4 is lower than five mcg/dL
Age 3-6 months
8-10 mcg/kg orally OR 25-50 mcg orally once a day
4-7.5 mcg/kg IV/IM once a day
Age: 6-12 months
6-8 mcg/kg orally OR 50-75 mcg orally once a day
3-6 mcg/kg IV/IM once a day
Age: 1-5 years
5-6 mcg/kg orally, OR 75-100 mcg orally once a day
2.5-4.5 mcg/kg IV/IM once a day
Age: 6-12 years
4-5 mcg/kg orally OR 100-125 mcg orally once a day
2-3.75 mcg/kg IV/IM once a day
Age: >12 years
2-3 mcg/kg orally, OR 150 mcg orally once a day
1-2.25 mcg/kg IV/IM once a day

Indicated for Congenital hypothyroidism
Initially 5 mcg orally each day
May increase the dose by 5 mcg every 3-4 days
Maintenance dose
For <1 year: 20 mcg orally each day
For 1-3 years: 50 mcg orally each day
For >3 years: 25-75 mcg orally each day

0 to 6 months: 3.1/12.5 to 6.25/25 orally;
6 to 12 months: 6.25/25 to 9.35/37.5 orally;
1 to 5 yrs: 9.35/37.5 to 12.5/50 mcg orally;
6- to 12 yrs: 12.5/50 to 18.75/75 mcg orally;
Above 12 yrs: more than 18.75/75 mcg orally;