Methimazole — $0 on Listed Strengths

Related medications

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Also listed for Hyperthyroidism

• Atenolol
• Propranolol
• Propylthiouracil

Other medications in Endocrine

• Cholecalciferol
• Ergocalciferol
• Levothyroxine
• Liothyronine

About Methimazole

Methimazole is a vital medication prescribed to manage hyperthyroidism, a condition where the thyroid gland produces too much hormone. For those navigating this diagnosis, finding affordable access to essential treatments is crucial. TheDrugClub is dedicated to making your health journey easier, offering significant savings on medications like methimazole.

Methimazole is primarily used to treat hyperthyroidism, a condition characterized by an overactive thyroid gland. This can manifest in various symptoms such as rapid heartbeat, weight loss, anxiety, tremors, and heat intolerance. It's often prescribed for conditions like Graves' disease, the most common cause of hyperthyroidism, and can also be used to prepare patients for thyroid surgery or radioactive iodine therapy. By bringing thyroid hormone levels back into a normal range, methimazole helps alleviate these uncomfortable and potentially serious symptoms.

At its core, methimazole works by inhibiting the thyroid gland's ability to produce thyroid hormones (T3 and T4). It does this by blocking an enzyme called thyroid peroxidase, which is crucial for the synthesis of these hormones. Unlike some treatments that destroy thyroid tissue, methimazole acts by reducing the *production* of new hormones. It doesn't affect hormones already in circulation, which is why it can take several weeks for patients to feel the full effects as existing hormones are gradually used up. This mechanism makes it a cornerstone therapy for long-term management of hyperthyroidism.

The cost of methimazole can vary significantly based on pharmacy, dosage, and whether you have insurance. Without insurance, a typical cash price for a month

The information above is for educational purposes only and does not constitute medical advice. Consult your healthcare provider before making medication decisions.

What Methimazole is approved for (FDA label)

Methimazole tablets are indicated: In patients with Graves' disease with hyperthyroidism or toxic multinodular goiter for whom surgery or radioactive iodine therapy is not an appropriate treatment option. To ameliorate symptoms of hyperthyroidism in preparation for thyroidectomy or radioactive iodine therapy.

Source: Read the full FDA label on DailyMed. Label effective date: September 9, 2026.

Excerpt from the FDA-approved prescribing information. This is not medical advice; talk to your doctor or pharmacist.

Adverse reactions for Methimazole (FDA label)

Major adverse reactions (which occur with much less frequency than the minor adverse reactions) include inhibition of myelopoiesis (agranulocytosis, granulocytopenia, thrombocytopenia, and aplastic anemia), drug fever, a lupus-like syndrome, insulin autoimmune syndrome (which can result in hypoglycemic coma), hepatitis (jaundice may persist for several weeks after discontinuation of the drug), periarteritis, and hypoprothrombinemia. Nephritis occurs very rarely. There have been postmarketing case reports of acute pancreatitis. There are reports of a vasculitis, often associated with the presence of anti-neutrophilic cytoplasmic antibodies (ANCA), resulting in severe complications (see WARNINGS).

Source: FDA prescribing information (DailyMed). Set ID: f69edfa9-0efb-4fe8-aeab-50f7baeebb6a. SPL document ID: 5b0f22cc-34dc-605d-e063-6294a90ae719. Label effective date: September 9, 2026. Read the full label.

Excerpt from the FDA-approved prescribing information. This is not medical advice; talk to your doctor or pharmacist.

Contraindications for Methimazole (FDA label)

Methimazole tablets are contraindicated in the presence of hypersensitivity to the drug or any of the other product components.

Source: FDA prescribing information (DailyMed). Set ID: f69edfa9-0efb-4fe8-aeab-50f7baeebb6a. SPL document ID: 5b0f22cc-34dc-605d-e063-6294a90ae719. Label effective date: September 9, 2026. Read the full label.

Excerpt from the FDA-approved prescribing information. This is not medical advice; talk to your doctor or pharmacist.

Drug interactions for Methimazole (FDA label)

Anticoagulants (oral): Due to potential inhibition of vitamin K activity by methimazole, the activity of oral anticoagulants (e.g., warfarin) may be increased; additional monitoring of PT/INR should be considered, especially before surgical procedures. ß-adrenergic blocking agents: Hyperthyroidism may cause an increased clearance of beta blockers with a high extraction ratio. A dose reduction of beta-adrenergic blockers may be needed when a hyperthyroid patient becomes euthyroid. Digitalis glycosides: Serum digitalis levels may be increased when hyperthyroid patients on a stable digitalis glycoside regimen become euthyroid; a reduced dosage of digitalis glycosides may be needed. Theophylline: Theophylline clearance may decrease when hyperthyroid patients on a stable theophylline regimen become euthyroid; a reduced dose of theophylline may be needed.

Source: FDA prescribing information (DailyMed). Set ID: f69edfa9-0efb-4fe8-aeab-50f7baeebb6a. SPL document ID: 5b0f22cc-34dc-605d-e063-6294a90ae719. Label effective date: September 9, 2026. Read the full label.

Excerpt from the FDA-approved prescribing information. This is not medical advice; talk to your doctor or pharmacist.