Allopurinol Side Effects

Possible Allopurinol Side Effects

Allopurinol has been thoroughly studied in clinical trials. In these studies, the side effects that occurred in a group of people taking the drug were documented and then compared to the side effects that occurred in another group of people not taking the medicine. As a result, it was possible to see what side effects occurred, how often they appeared, and how they compared to the group not taking the medicine.
In these studies, the most common allopurinol side effects (occurring in more than 1 percent of people) included:
Less common side effects (occurring in less than 1 percent of people) that were thought to be related to allopurinol included:
  • Fever
  • Headaches
  • Vomiting
  • Indigestion or heartburn
  • Muscle pain
  • Joint pain
  • Unusual sensations (such as burning, pricking, or tingling) in the hands or feet
  • Drowsiness
  • Nosebleeds
  • Hair loss
  • Taste changes or loss of taste.

Final Thoughts on Side Effects of Allopurinol

It is possible that you may experience some or none of the allopurinol side effects listed in this article. Unfortunately, there is no way for your healthcare provider to know beforehand if you will have side effects from a medicine that you have never tried. Therefore, make sure to let your healthcare provider know if you develop any side effects while taking allopurinol, or if you experience something that "just does not seem right." While it may not be a side effect of the medication, your healthcare provider will be able to diagnose and treat the problem.
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Allopurinol Medication Information

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