Methimazole

Medically Reviewed by Dr. Harshi Dhingra, M.D.

Last Reviewed: Aug 16, 2023

Common Questions


Common Questions about Methimazole


Which is better: PTU or methimazole?

Both PTU (propylthiouracil) and methimazole are antithyroid drugs that are used to treat hyperthyroidism. On a weight basis, methimazole is at least 10 times more powerful than PTU. It is also less likely to cause liver damage than PTU. Therefore, methimazole is usually the first choice drug for medical treatment of hyperthyroidism. However, PTU may be safer for use during pregnancy. Your doctor will help you choose the best medication for your condition.



What to avoid when taking methimazole?

Avoid drinking alcohol while taking methimazole, as this can increase the risk of liver damage. Take precautions to avoid infections and bleeding when on methimazole. This medication can lower white blood cells and increase the risk of infections. It can also lower platelets and increase the risk of bleeding. Avoid contact with people who are sick. Tell your doctor immediately if you notice unusual bruising or bleeding, such as red spots in your skin, black, tarry stools, or blood in your urine. Be careful when using sharp objects. Avoid contact sports that could result in injuries and bleeding.



How long do you have to stay on methimazole?

Most people need to take methimazole for a year or more. However, your doctor will check thyroid levels regularly, and if they are consistently in the normal range, you may be able to come off methimazole.



Does methimazole cause weight gain?

Taking methimazole may lead to weight gain in some people. A healthy diet and regular exercise should help to keep your weight under control. If your weight continues to be a problem despite lifestyle changes, talk to your doctor.



Does methimazole cause hair loss?

Hair loss can be a side effect of methimazole treatment. Keep in mind that abnormal thyroid levels can lead to hair loss. If your hair loss continues after your thyroid hormone levels are in the normal range, talk to your doctor.



What is the price of methimazole without insurance?

Without insurance, methimazole can be as high as $26.97, but with a free BuzzRx prescription discount coupon, you could pay as low as $9.44 for the most common version of this medication. Use the BuzzRx drug price look-up tool to find the lowest discounted price, and be sure to enter the correct dosage, form, and quantity for the most accurate pricing. While generics tend to have the best savings, you can also use your BuzzRx card and coupons to purchase brand-name versions. It never hurts to ask your pharmacist to try BuzzRx when filling or refilling any of your prescription drugs—whether you have insurance or not.



What is the price of methimazole with insurance?

Ask your pharmacist or insurance provider for your copay price on methimazole—Copay amounts vary depending on the type of insurance plan you have and if there is a deductible to reach before prescription drug coverage begins.

You could save up to 80% on your prescription medication with a free BuzzRx discount coupon for methimazole. When using the BuzzRx lookup tool to find the price of your medicine, be sure to enter the correct dosage, form, and quantity to receive the most accurate discounted pricing. It never hurts to ask your pharmacist to try BuzzRx when filling or refilling any of your prescriptions—whether you have insurance or not.