Less commmon:
Check with your doctor if any of the following side effects continue or are bothersome:
- darkening of skin
- diarrhea
- headache
- loss of appetite
- skin rash and itching
- weakness
Always Notify Doctor:
More common
- unusual tiredness or weakness
- yellow eyes or skin
Less Common
- joint pain
- loss of appetite
- nausea and vomiting
- swelling of feet or lower legs
Rare
- Sores in mouth and on lips
Notify Doctor Immediately:
Less common
- black, tarry stools
- blood in urine or stools
- cough or hoarseness
- fever or chills
- lower back or side pain
- painful or difficult urination
- pinpoint red spots on skin
- unusual bleeding or bruising
Other Notes:
Because of the way cancer medicines act on the body, there is a chance that they might cause other unwanted effects months or years after the medicine is used. These delayed effects may include certain types of cancer which should be discussed with a doctor.
Mercaptopurine may still produce side effects after you stopped treatment. During this period of time, check with your doctor if you notice any of the following side effects:
- black, tarry stools
- blood in urine or stools
- cough or hoarseness
- fever or chills
- lower back or side pain
- painful or difficult urination
- pinpoint red spots on skin
- unusual bleeding or bruising
- yellow eyes or skin
Other side effects not listed above may also occur in some patients. If you notice any other effects, check with your doctor. This information is meant only as a guideline - always consult a physician or pharmacist for complete information about prescription medications.
