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. It may also cause birth defects if the father is using it when his sexual partner becomes pregnant. Women should use effective birth control during treatment with this medicine and for at least 1 week after the last dose. Men with sexual partners should use effective birth control during treatment and for at least 3 months after the last dose. If you think a pregnancy has occurred with this medicine, tell your doctor right away.
Check with your doctor right away if you have pain or tenderness in the upper stomach, pale stools, dark urine, loss of appetite, nausea, vomiting, or yellow eyes or skin. These could be symptoms of a serious liver problem.
This medicine may cause swelling of the lungs (pneumonitis) or interstitial lung disease. These are life-threatening conditions and require immediate medical attention. The symptoms may be similar to those for lung cancer. Check with your doctor right away if you have a new or worsening cough, fever, shortness of breath, or trouble breathing.
Check with your doctor right away if you have bloody urine, a decrease in frequency or amount of urine, an increase in blood pressure, increased thirst, loss of appetite, lower back or side pain, nausea, swelling of the face, fingers, or lower legs, troubled breathing, unusual tiredness or weakness, vomiting, or weight gain. These could be symptoms of a serious kidney problem.
Bradycardia (slow heartbeat) may occur while you are using this medicine. Tell your doctor right away if you have chest pain or discomfort, lightheadedness, dizziness, or fainting, or a slow or uneven heartbeat.
Tell your doctor right away if you have unexplained muscle pain, tenderness, or weakness after taking this medicine. These may be symptoms of a serious muscle problem.
This medicine may make your skin more sensitive to sunlight. Use a sunscreen and protective clothing when you are outdoors. Avoid sunlamps and tanning beds.