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.