Tapazole contains the active ingredient methimazole as an antithyroid drug, available in tablet form with dosages of 5 mg and 10 mg, for oral administration. Key inactive ingredients include lactose monohydrate, magnesium stearate, and pregelatinized maize starch.
How should I use this medication?
Take this medication by mouth with a glass of water. Follow the directions on the prescription label. You can take this medication 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 medication more often than directed. Do not stop taking this medication except on the advice of your care team. Talk to your care team about the use of this medication in children. Special care may be needed. While this medication 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.
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.
Where should I keep my medication?
Keep out of the reach of children. Store at room temperature between 20 and 25 degrees C (68 and 77 degrees F). Keep tightly closed. Protect from light. Throw away any unused medication after the expiration date.
NOTE: This sheet is a summary. It may not cover all possible information. If you have questions about this medicine, talk to your doctor, pharmacist, or health care provider.
What side effects may I notice from receiving this medication?
Side effects that you should report to your care team as soon as possible: -Allergic reactions—skin rash, itching, hives, swelling of the face, lips, tongue, or throat -Infection—fever, chills, cough, or sore throat -Liver injury—right upper belly pain, loss of appetite, nausea, light-colored stool, dark yellow or brown urine, yellowing skin or eyes, unusual weakness or fatigue -Low thyroid levels (hypothyroidism)—unusual weakness or fatigue, increased sensitivity to cold, constipation, hair loss, dry skin, weight gain, feelings of depression -Unusual weakness or fatigue, fever, headache, skin rash, muscle or joint pain, loss of appetite, pain, tingling, or numbness in the hands or feet Side effects that usually do not require medical attention (report to your care team if they continue or are bothersome): -Change in taste -Dizziness -Hair loss -Headache -Nausea -Upset stomach
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.
What should I tell my care team before I take this medication?
They need to know if you have any of these conditions: -Liver disease -Low white blood cell levels -An unusual or allergic reaction to methimazole, other medications, foods, dyes, or preservatives -Pregnant or trying to get pregnant -Breastfeeding
What may interact with this medication?
-Aminophylline -Certain medications for blood pressure, heart disease, or irregular heartbeat, such as 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.
What should I watch for while using this medication?
Visit your care team for regular checks on your progress. Tell your care team if your symptoms do not start to get better or if they get worse. It may be some time before you see the benefit from this medication. You may need blood work done while you are taking this medication. Biotin (vitamin B7) may interfere with your thyroid function test. Stop taking supplements that contain biotin 2 days before your blood work. This medication may increase your risk of getting an infection. Call your care team for advice if you get a fever, chills, sore throat, or other symptoms of a cold or flu. Do not treat yourself. Try to avoid being around people who are sick. Talk to your care team if you may be pregnant. Serious birth defects can occur if you take this medication during pregnancy. If you are going to need surgery or a procedure, tell your care team that you are taking this medication.
Source: This information is sourced from Elsevier Inc.
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