Methimazole Dosage

Generic name: methimazole
Brand names: Tapazole, Northyx
Drug class: Antithyroid agents

Medically reviewed by  A Ras MD.

Recommended Adult Dosing

Dosage forms:  TAB: 5 mg, 10 mg

Hyperthyroidism

[5-15 mg PO qd]

Start: 5-20 mg PO q8h; Info: once euthyroid, start maint. dose; give w/ food

Renal dosing

renal impairment: no adjustment

HD/PD: not defined

Hepatic dosing

hepatitis: avoid use

Recommended Peds Dosing

Dosage forms:  TAB: 5 mg, 10 mg

Hyperthyroidism

[0.2 mg/kg/day PO divided qd-tid]

Start: 0.4 mg/kg/day PO divided tid; Max: 30 mg/day; Info: give w/ food

Renal dosing

[not defined]

renal impairment: consider adult renal dosing for guidance

HD/PD: consider adult renal dosing for guidance

Hepatic dosing

hepatitis: avoid use

SRC: NLM .