Allopurinol is in a class of xanthine oxidase inhibitors
Allopurinol is used to treat gout (A type of arthritis in which uric acid, a naturally occurring substance in the body, builds up in the joints and causes sudden attacks of redness, swelling, pain and heat in one or more joints
To treat high levels of uric acid that builds up in the blood as tumors with chemotherapy medication
Reduces uric acid level, high levels of uric acid cause gout attacks or kid stones