What Is Allopurinol?

Possible Side Effects

Side effects appear to be fairly frequent on this medication. Patients seem to report certain effects more than others. This may include nausea, vomiting, and headaches. Other common side effects appear to be skin rashes, drowsiness, and diarrhea. Some individuals may deal with taste changes or an upset stomach on this medicine. It also seems that this medication can return abnormal liver function test results. Thus, patients may need to talk to their doctor if they experience certain side effects. These effects appear to include persistent or severe upset stomach, diarrhea, or drowsiness. Consulting a doctor for mild skin rashes seems to be important too.

Rare side effects of this medication are also possible. They may include tingling, numbness, and urinary issues. The urinary issues that seem to happen are decreased output and painful urination. This may also be bloody urine. There also appears to be rare liver problems on this medication. Patients may want to look for stomach pain, itching, fever, and chills. Appetite loss and unexplained weight loss can happen as well. These symptoms seem to need immediate attention. Patients may also need urgent help for the urinary side effects.

Get the details on possible precautions to consider next.