What should I watch for?
You may need blood work done while you are taking this medicine.
This medicine may increase your risk to bruise or bleed. Call your doctor or health care professional if you notice any unusual bleeding.
Call your doctor or health care professional for advice if you get a fever, chills or sore throat, or other symptoms of a cold or flu. Do not treat yourself. This drug decreases your body's ability to fight infections. Try to avoid being around people who are sick.
If you are going to have surgery or any other procedures, tell your doctor you are taking this medicine. Tell your dentist and dental surgeon that you are taking this medicine. You should not have major dental surgery while on this medicine. See your dentist to have a dental exam and fix any dental problems before starting this medicine.
Talk to your doctor about your risk of cancer. You may be more at risk for certain types of cancers if you take this medicine. Keep out of the sun. If you cannot avoid being in the sun, wear protective clothing and use sunscreen.
Do not become pregnant while taking this medicine. Women should inform their doctor if they wish to become pregnant or think they might be pregnant. There is a potential for serious side effects to an unborn child. Talk to your health care professional or pharmacist for more information. Do not breast-feed an infant while taking this medicine or for 2 weeks after stopping it.
Side Effects to watch for
Side effects that you should report to your doctor or health care professional as soon as possible:
- allergic reactions like skin rash, itching or hives, swelling of the face, lips, or tongue
- low blood counts - this medicine may decrease the number of white blood cells, red blood cells and platelets. You may be at increased risk for infections and bleeding.
- signs of decreased red blood cells - unusually weak or tired, feeling faint or lightheaded, falls
- signs or symptoms of bleeding such as bloody or black, tarry stools; red or dark-brown urine; spitting up blood or brown material that looks like coffee grounds; red spots on the skin; unusual bruising or bleeding from the eye, gums, or nose; confusion; trouble speaking or understanding; severe headaches; weakness; or dizziness
- signs and symptoms of a dangerous change in heartbeat or heart rhythm like chest pain; dizziness; fast or irregular heartbeat; palpitations; feeling faint or lightheaded, falls; breathing problems
- signs of infection - fever or chills, cough, sore throat, pain or difficulty passing urine
Side effects that usually do not require medical attention (report these to your doctor or health care professional if they continue or are bothersome):
What may interact with this drug?
This medicine may interact with the following medications:
- antiviral medications for HIV or AIDS
- calcium channel blockers like diltiazem and verapamil
- certain antibiotics like clarithromycin, erythromycin, and troleandomycin
- certain medicines for fungal infections like fluconazole, ketoconazole, itraconazole, posaconazole, and voriconazole
- certain medicines for seizures like carbamazepine and phenytoin
- certain medicines for stomach problems like cimetidine, famotidine, omeprazole, lansoprazole
- grapefruit juice
- St. John's wort