It is very important that your doctor check your progress at regular visits to make sure this medicine is working properly. Blood and urine tests may be needed to check for unwanted effects.
Using this medicine while you are pregnant can harm your unborn baby. Use an effective form of birth control to keep from getting pregnant. You should continue to use birth control at least 14 days after you have stopped taking this medicine. However, if you think you have become pregnant while using the medicine, tell your doctor right away.
It is important that you talk to your doctor right away if you have severe or continuing diarrhea, nausea, loss of appetite, or vomiting.
Call your doctor right away if you have unexplained shortness of breath, cough, and fever that comes on suddenly.
Check with your doctor right away if you have bloody or black, tarry stools; severe stomach pain; or vomiting of blood or material that looks like coffee grounds. These could be symptoms of a serious stomach or bowel problem.
Liver problems may occur while you are using this medicine. Stop using this medicine and check with your doctor right away if you are having more than one of these symptoms: abdominal pain or tenderness; clay-colored stools; dark urine; decreased appetite; fever; headache; itching; loss of appetite; skin rash; swelling of the feet or lower legs; unusual tiredness or weakness; or yellow eyes or skin.
Serious skin reactions can occur with this medicine. Check with your doctor right away if you have blistering, peeling, or loosening of the skin; red skin lesions; severe acne or skin rash; sores or ulcers on the skin; or fever or chills while you are using this medicine.
You may use alcohol-free emollient creams, sunscreen, or sun blocking lotions to prevent dry skin and other serious skin reactions.
Check with your doctor immediately if blurred vision, difficulty in reading, any other change in vision, or eye pain or irritation occurs during or after treatment. Your doctor may want you to have your eyes checked by an ophthalmologist (eye doctor).
Do not take other medicines unless they have been discussed with your doctor. This includes prescription or nonprescription (over-the-counter [OTC]) medicines and herbal (St. John's wort) or vitamin supplements.