Generic Zyloprim (Allopurinol): 100mg/300mg Zyloprim is a xanthine oxidase inhibitor used to treat gout or kidney stones, and to lower uric acid levels in people receiving cancer treatment. Zyloprim reduces the production of uric acid in the body, preventing the formation of crystals. Dosage and direction Take orally once a day, possibly after a meal. … Continue reading How to buy Generic Zyloprim (Allopurinol) without a prescription? →