Allopurinol reduces the production of uric acid in the body. If uric acid levels get too high, crystals can form in your joints and cause inflammation and pain (gout flares) or stones can form in your kidneys. By reducing the formation of uric acid, allopurinol helps prevent gout flares, kidney stones and bladder stones.

Uses:
• It treats gout, which is a form of arthritis caused by too much uric acid in your blood and joints.
• It lowers uric acid levels in cases of chemotherapy for cancer, or having certain types of kidney stones.
• Allopurinol may also be used for other conditions as determined by your healthcare provider.