Methimazole: study card

Generic name

Methimazole

Class

Antithyroid drug

Mechanism

Inhibits thyroid hormone synthesis; does not inactivate stored or circulating T4 and T3.

Used for

Hyperthyroidism from Graves' disease or toxic multinodular goiter when surgery or radioactive iodine is not appropriate; Control of hyperthyroid symptoms before thyroidectomy or radioactive iodine treatment

Common side effects

Skin rash; Urticaria; Nausea; Arthralgia; Loss of taste

Warnings

Agranulocytosis, aplastic anemia; Hepatitis; ANCA-associated vasculitis

Interactions

Oral anticoagulants (warfarin); Beta-blockers; Digitalis glycosides

Brand questions use only name pairings verified against the linked product source. Unverified pairings are withheld from these questions; the other study content remains available.

Label date: 20260909 · For learning, not clinical decisions. US label and brand information; always consult the current source.

Source snapshot checked: 2026-10-21. The source document and selected fields were compared. The complete card has not had an independent clinical review.