Tapazole (Methimazole)

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Tapazole Brand
Dosage Quantity & Price
Methimazole (Generic alternate to Tapazole) Generic
Dosage Quantity & Price
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Table of contents:

Tapazole is a medication indicated to treat hyperthyroidism, or an overactive thyroid and Graves' disease. Tapazole contains an active ingriedent called Methimazole. Methimazole is an antithyroid drug that works by blocking the production of thyroid hormones. Its effectiveness comes from its ability to slow down the production of thyroid hormones, resulting in a decrease in symptoms like weight loss, heat intolerance, and high blood pressure.

Uses and Dosage

Tapazole is available in tablet form and should be taken orally by mouth with or without food as directed by a healthcare professional. To ensure the safe and effective use of Tapazole, take this medication exactly as directed by your doctor, usually 1 to 3 times a day. Do not increase your dose or take it more often than prescribed, as this can increase the risk of side effects without improving your condition any faster. Do not stop taking this medication without first consulting your doctor.

The recommended dose of Tapazole for adults ranges from 5 to 40 mg per day, taken orally by mouth, depending on the severity of hyperthyroidism. It is typically taken in 3 divided doses, spaced approximately 8 hours apart.

Your healthcare provider will monitor your thyroid hormone levels and adjust your dosage as needed to achieve optimal results. Once your thyroid hormone levels are stable, your doctor may recommend switching to a once-per-day dosage.

Side effect

Common Side Effects of Tapazole (Methimazole):

  • Headache
  • Itching
  • Joint pain
  • Nausea
  • Mild skin rash
  • Stomach pain or upset
  • Vomiting

Serious Side Effects of Tapazole (Methimazole):

  • Bloody urine
  • Changes in the amount of urine
  • Coughing up blood
  • Easy bleeding or bruising
  • Fever
  • Joint/muscle pain
  • Loss of hair
  • Loss of taste
  • Muscle pain
  • Numbness
  • Persistent sore throat
  • Severe abdominal pain
  • Shortness of breath
  • Tingling sensation
  • Unusual tiredness

Form and strength

Tapazole (Methimazole) is available in the following forms and strength:

Tapazole: Tablet

  • 5 mg

Methimazole: Tablet

  • 5 mg


  • Before taking methimazole, tell your doctor or pharmacist if you are allergic to it; or if you have any other allergies. It may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details.
  • Methimazole can cause damage to the liver. If you experience symptoms of potential liver damage such as nausea, vomiting, and stomach pain, talk to your healthcare provider who will have you do a blood test to see how your liver is functioning.
  • Tapazole can raise your risk of bleeding if you are also taking Coumadin (warfarin). Tell your healthcare provider right away if you experience bruising, dark stools, pink or red colored urine, or unusual bleeding from your nose or gums.
  • When taking Methimazole, be aware that it has the potential to reduce the number of white blood cells in your body, a condition known as neutropenia. This can make it more difficult for your body to fight off infections and can be life-threatening.
  • Methimazole can potentially harm a fetus if taken during pregnancy. Do not use in pregnant women during their first trimester or for females planning to conceive.

Frequently Asked Questions (FAQ)

How quickly does Tapazole work?

This type of prescription drug does not relieve hyperthyroidism right away. It may take a few weeks or a few months for this medication to work.

How long can you stay on Tapazole?

If the goal is to alleviate symptoms of hyperthyroidism, it should be taken for six to twelve weeks. But for most patients, this is prescribed for up to 18 months.

Can I drink alcohol while taking methimazole?

It is not recommended to drink alcohol while taking this medication. Doing so can put more stress on your liver.

What do I do if I miss a dose?

Take the missed dose as soon as you remember, but if it is almost time for your next dose, skip the dose you missed and go back to your next dose when it is time. Do not take 2 doses at the same time or any extra doses.


It's important to purchase Tapazole from verified Canadian pharmacy.

Additional information

Generic name:






Quantities Available:

90, 100, 200