Can Dogs Take Allopurinol?

Can Dogs Take Allopurinol? Allopurinol (brand names Lopurin®, Zyloprim®) is a drug used to prevent the recurrence of uric acid and calcium oxalate uroliths (stones) in dogs. This medication works by decreasing the production of uric acid in the body. Who should not use allopurinol? abnormal liver function tests. chronic kidney disease stage 4 (severe)