Side Effects of This Medicine

Along with its needed effects, temozolomide may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.

Check with your doctor or nurse immediately if any of the following side effects occur:

Less common or rare

Amnesia; black, tarry stools; blood in urine or stools; convulsions (seizures); cough or hoarseness; fever or chills; infection; lower back or side pain; muscle weakness or paralysis on one or both sides of the body; painful or difficult urination; pinpoint red spots on skin; swelling of feet or lower legs; unusual bleeding or bruising

Other side effects may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. However, check with your doctor if any of the following side effects continue or are bothersome:

More common

Constipation; headache; nausea and vomiting; unusual tiredness or weakness

Less common or rare

Abdominal or stomach pain; anxiety; blurred or double vision; breast pain (in females); burning or prickling feeling on the skin; confusion; diarrhea; difficulty in speaking; dizziness; drowsiness; loss of appetite; loss of muscle coordination; mental depression; muscle pain; runny or stuffy nose; skin rash or itching; sore throat; trouble in sleeping; unusual weight gain; urinary incontinence or increased urge to urinate

Other side effects not listed above may also occur in some patients. If you notice any other effects, check with your doctor.