Precautions

Drug information provided by: IBM Micromedex

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. It may also cause birth defects if the father is using it when his sexual partner becomes pregnant. If you are a woman who can get pregnant, your doctor may do tests before you start using this medicine to make sure you are not pregnant. Birth control pills may not work as well to prevent pregnancy when used with this medicine. Use another form of birth control (eg, condoms, spermicide) along with your pills. Female patients should use effective birth control during treatment and for at least 6 months after the last dose. Male patients who have female partners should use effective birth control during treatment and for at least 3 months after the last dose. If you think you have become pregnant while using this medicine, tell your doctor right away.

Talk with your doctor before using this medicine if you plan to have children. Some men who use this medicine have become infertile (unable to have children).

Do not use this medicine together with rifampin (Rifadin®). Using these medicines together may increase risk for serious liver problems.

Cancer medicines can cause diarrhea, nausea, vomiting, or stomach pain in most people, sometimes even after receiving medicines to prevent it. Ask your doctor or nurse about other ways to control these unwanted effects.

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 brain or nerve problems. Check with your doctor right away if you have changes in your behavior, discouragement, feeling sad or empty, irritability, lack of appetite, loss of interest or pleasure, seizures, thoughts of killing oneself, tiredness, trouble concentrating, or trouble sleeping.

Contact your doctor right away if you have any changes to your heart rhythm. You might feel dizzy or faint, or you might have a slow, fast, pounding, or uneven heartbeat.

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 the symptoms of lung cancer. Check with your doctor right away if you have new or worsening cough, fever, or trouble breathing.

You will need to have your blood pressure measured before starting this medicine and while you are using it. If you notice any change to your recommended blood pressure, call your doctor right away. Symptoms of high blood pressure are blurred vision, severe headache, a slow or fast heartbeat, lightheadedness, or dizziness.

This medicine may affect your blood sugar levels. Check with your doctor right away if you have increased thirst or increased urination. If you notice a change in the results of your urine or blood sugar tests, or if you have any questions, check with your 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 (eg, St. John's wort) or vitamin supplements.