Please consult your physician before taking any medication. Zyloprim 300mg 30 Tabs Generic Name: allopurinol (al oh PURE i nole) Brand Names: Zyloprim What is Zyloprim (allopurinol)? Allopurinol reduces the production of uric acid in your body. Uric acid buildup can lead to gout or kidney stones. Allopurinol is used to treat gout or kidney stones, and to decrease levels of uric acid in people who are receiving cancer treatment. Allopurinol may also be used for purposes other than those listed in this medication guide.