HomeDrugs Allopurinol byKhushveer Choudhary •November 28, 2022 0 Allopurinol :Allopurinol is a xanthine oxidase inhibitor drug. Allopurinol is used to lower urine and serum uric acid concentrations in patients with gout, recurrent calcium oxalate stones, and various malignancies. Tags: Drugs Facebook Twitter