| Generic Name: allopurinol (al oh PURE i nole) Brand Names: Zyloprim What is the most important information I should know about allopurinol? • To reduce the risk that kidney stones will form, drink 8 to 10 full glasses (8-ounce glasses) of fluid every day, unless your doctor directs otherwise. • Avoid alcohol. It may worsen your condition. • Use caution when driving, operating machinery, or performing other hazardous activities. Allopurinol may cause drowsiness. If you experience drowsiness, avoid these activities. What is allopurinol? • Allopurinol reduces the production of uric acid in your body. • Allopurinol is used to treat gout, increased levels of uric acid caused by cancer treatment, and kidney stones that are caused by high levels of uric acid. • Allopurinol may also be used for purposes other than those listed in this medication guide. | 
