What should I watch for?
You may need blood work done while you are taking this medicine.
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.
Do not become pregnant while taking this medicine or for at least 1 month after stopping it. Women should inform their doctor if they wish to become pregnant or think they might be pregnant. Men should not father a child while taking this medicine and for 3 months after stopping it. 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 and for at least 1 month 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
- breathing problems like shortness of breath
- 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
- redness, blistering, peeling or loosening of the skin, including inside the mouth
- signs and 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
- signs of infection - fever or chills, cough, sore throat, pain or difficulty passing urine
- signs and symptoms of liver injury like dark yellow or brown urine; general ill feeling or flu-like symptoms; light-colored stools; loss of appetite; nausea; right upper belly pain; unusually weak or tired; yellowing of the eyes or skin
- stomach pain
Side effects that usually do not require medical attention (report to your doctor or health care professional if they continue or are bothersome):
What may interact with this drug?
Do not take this medicine with any of the following medications:
- St. John's Wort, Hypericum perforatum
This medicine may also interact with the following medications:
- certain medicines for blood pressure, heart disease, irregular heart beat
- certain medicines for blood pressure like amlodipine, felodipine, nifedipine
- certain medicines for cholesterol like atorvastatin, lovastatin, and simvastatin
- certain medicines for depression, anxiety, or psychotic disturbances
- certain medicines for erectile dysfunction
- certain medicines that treat or prevent blood clots like warfarin, enoxaparin, dalteparin, apixaban, dabigatran, and rivaroxaban
- ergot alkaloids like dihydroergotamine, ergotamine
- narcotic medicines for pain