It is very important that your doctor check your progress at regular visits to make sure this medicine is working properly. Blood 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 for at least 14 days after your last dose. If you think you have become pregnant while using the medicine, tell your doctor right away.
If you plan to have children, talk with your doctor before using this medicine. Some women using this medicine have become infertile (unable to have children).
Call your doctor right away if you have unexplained shortness of breath, cough, and fever that comes on suddenly. These could be symptoms of a serious lung condition.
Check with your doctor right away if you have dark urine or pale stools, yellow skin or eyes, nausea or vomiting, or upper stomach pain. These could be symptoms of a liver problem.
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.
It is important that you talk to your doctor right away if you have severe or continuing diarrhea that lasts up to 14 days.
Check with your doctor right away if blurred vision or any vision change, eye pain, or eye irritation occurs during or after treatment. Your doctor may want you to have your eyes checked by an ophthalmologist (eye doctor).
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.
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.