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Active pharmaceutical ingredient

Methimazole

Methimazole is a potent antithyroid medication primarily used to manage hyperthyroidism by inhibiting the synthesis of thyroid hormones.

Compounded to order
Prescription required
Warwick, Rhode Island

About this ingredient

Methimazole is a thionamide antithyroid agent primarily used in the management of hyperthyroidism, a condition characterized by excessive thyroid hormone production. It works by inhibiting the enzyme thyroid peroxidase, which plays a crucial role in the synthesis of thyroid hormones, thereby reducing the levels of thyroxine (T4) and triiodothyronine (T3) in the body.

This mechanism of action makes Methimazole an effective treatment option for conditions such as Graves' disease, toxic multinodular goiter, and thyroid storm. Its ability to decrease thyroid hormone production helps alleviate symptoms like rapid heartbeat, weight loss, and nervousness associated with hyperthyroidism.

In clinical practice, Methimazole is often preferred over other antithyroid medications due to its longer half-life, which allows for less frequent dosing and improved patient compliance. It is typically administered orally, and the dosage may vary based on the severity of the condition and the patient's response to treatment.

While Methimazole is generally well-tolerated, it is important for prescribers to monitor patients for potential side effects, such as agranulocytosis, hepatotoxicity, and skin rash. Regular blood tests are recommended to assess thyroid function and ensure the safe use of this medication.

In the context of compounding, Methimazole can be formulated into various dosage forms to meet specific patient needs, including those who may have difficulty swallowing tablets or require tailored dosing regimens. This flexibility in formulation enhances its utility in personalized medicine, allowing healthcare providers to optimize treatment outcomes for their patients.

Available formulations

Compounded formulations containing this ingredient

Each of these is compounded to order at our Warwick, Rhode Island pharmacy and requires a prescription.

Compounding formulary

Formulas we compound with this ingredient

A sample of preparations from our formulary. Strengths and dose forms are customised to the prescription.

Common questions

Frequently asked questions

What is methimazole used for in cats?

Veterinarians prescribe methimazole to manage hyperthyroidism in cats, an overactive thyroid that makes too much hormone. It lowers thyroid hormone production as part of a plan your veterinarian determines.

Related

Related active ingredients

Other salt forms of this molecule, and ingredients commonly compounded alongside it.

No items found.

Important information

This page describes an active pharmaceutical ingredient, not a finished drug product. Bayview Pharmacy compounds preparations containing it only on a prescriber's order for an individual patient.

Compounded preparations are not FDA-approved, and the FDA has not evaluated them for safety, effectiveness, or manufacturing quality. Nothing on this page is a claim that any preparation is effective for any condition.

A valid prescription is required. Availability depends on Bayview's licensure in your state. This page is general information, not medical advice — discuss your situation with a licensed healthcare provider.

Talk to a compounding pharmacist

Our pharmacists work with prescribers to build preparations around a patient's dose, form and tolerances. Ask us what is possible with this ingredient.