-aminophylline
-certain medicines for high blood pressure, heart disease, or irregular heartbeat like metoprolol and propranolol
-digoxin
-theophylline
-warfarin

They need to know if you have any of these conditions:

-liver disease
-low blood counts, like low white cell counts
-an unusual or allergic reaction to propylthiouracil, other medicines, foods, dyes, or preservatives
-pregnant or trying to get pregnant
-breast-feeding

Visit your doctor or health care professional for regular checks on your progress. Tell your doctor or healthcare professional if your symptoms do not start to get better or if they get worse. It may take time for your condition to improve. You will need tests to check your blood counts and to make sure your body is making the right amount of thyroid hormone.

Call your doctor or health care professional for advice if you get a fever, chills or sore throat. Do not treat yourself.

Women should inform their doctor if they wish to become pregnant or think they might be pregnant. Talk to your doctor or pharmacist for more information.

If you are going to need surgery or other procedure, tell your doctor that you are using this medicine.

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. Throw away any unused medicine after the expiration date.