• Basic Info
• Top Questions
• Clinical Info

What is this medicine?
METHIMAZOLE (meth IM a zole) prevents the thyroid gland from producing too much thyroid hormone. It is used to treat a condition known as hyperthyroidism.

This medicine may be used for other purposes; ask your health care provider or pharmacist if you have questions.

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What is the price of this medication and similar alternatives?

This pricing information is subject to change at the sole discretion of DS Pharmacy. This pricing information was updated 09/2009. For the most current and up-to-date pricing information, please visit www.drugstore.com. Actual costs to patients will vary depending on the use of specific retail or mail-order locations and health insurance copays.

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What side effects may I notice from receiving this medicine?
Side effects that you should report to your doctor or health care professional as soon as possible:

• black, tarry stools
• fever, sore throat, hoarseness
• numbness or tingling in the hands or feet
• severe redness or itching of the skin, or dry cracked skin
• stomach pain
• swelling of the feet or legs
• unusual bleeding or bruising, pinpoint red spots on the skin
• unusual or sudden weight increase
• unusually weak or tired
• yellowing of skin or eyes

Side effects that usually do not require medical attention (report to your doctor or health care professional if they continue or are bothersome):

• headache
• nausea, vomiting
• mild skin rash, itching
• muscle aches and pains

This list may not describe all possible side effects. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

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How should I use this medicine?
Take this medicine by mouth with a glass of water. Follow the directions on the prescription label. You can take this medicine with or without food. However, you should always take it the same way to make sure the effects are the same. Take your doses at regular intervals. Do not take your medicine more often than directed. Do not stop taking this medicine except on the advice of your doctor or health care professional.

Talk to your pediatrician regarding the use of this medicine in children. Special care may be needed. While this drug may be prescribed for children for selected conditions, precautions do apply.

Overdosage: If you think you have taken too much of this medicine contact a poison control center or emergency room at once.
NOTE: This medicine is only for you. Do not share this medicine with others.

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What if I miss a dose?
If you miss a dose, take it as soon as you can. If it is almost time for your next dose, take only that dose. Do not take double or extra doses.

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What may interact with this medicine?
Do not take this medicine with any of the following medications:

• sodium iodide
• thyroid hormones

This medicine may also interact with the following medications:

• certain medicines for high blood pressure like metoprolol and propranolol
• digoxin
• theophylline
• warfarin

This list may not describe all possible interactions. Give your health care provider a list of all the medicines, herbs, non-prescription drugs, or dietary supplements you use. Also tell them if you smoke, drink alcohol, or use illegal drugs. Some items may interact with your medicine.

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Who should NOT use this medication?

• Use in nursing women, according to some manufacturers. (See Lactation under Cautions.)
• Hypersensitivity to methimazole or any ingredient in the formulation.

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What should I watch for while using this medicine?
Visit your doctor or health care professional for regular checks on your progress. Your thyroid hormone levels will need to be checked.

This medicine can reduce your resistance to infection. Contact your doctor or health care professional if you have any infection or injury. Avoid people who have colds, flu, bronchitis or other infectious disease. Do not have any vaccinations without asking your doctor or health care professional. Avoid people who have recently received oral polio vaccine.

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What should I tell my health care provider before I take this medicine?
They need to know if you have any of these conditions:

• bone marrow disease
• liver disease
• an unusual or allergic reaction to methimazole, other medicines, foods, dyes, or preservatives
• pregnant or trying to get pregnant
• breast-feeding

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Can I stop taking the medication if I feel better?
As a general rule, you should always take your medications exactly as prescribed and do not change the dosage or stop taking the medication without first discussing it with your healthcare provider.

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I am on so many medications; do I have to take them all?
This is called polypharmacy—many different medications being used at the same time by one person. Sometimes, being on multiple medications is acceptable and appropriate but at other times it may be problematic. If you are receiving your medications from multiple physicians you need to ensure that they all know what medications you are taking. The best way to do this is to make a list of all the medications you are currently using, including all nutritional supplements, homeopathic remedies, vitamins and over-the-counter drugs (if possible, also include all the diseases you have been diagnosed with). Give a copy to every doctor who takes care of you so they have it on file, this way they can avoid duplicating medications and perhaps even try to consolidate some. After every doctor's visit remember to update the list accordingly. Also, as much as you possibly can, try to use the same pharmacy to fill all your prescriptions, this way any potential drug interactions can be caught and averted.

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Where can I get more information?
More Information

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