Zyle 100 Tablet contains Allopurinol 100 mg, a xanthine oxidase inhibitor primarily indicated for the management of hyperuricemia and gout. Allopurinol acts by reducing the production of uric acid, thereby preventing the formation of urate crystals that cause inflammation and pain in gouty arthritis. It is also employed in the prevention of uric acid nephropathy and renal calculi in patients undergoing cancer chemotherapy, where rapid cell turnover increases uric acid levels. Zyle 100 is administered orally and is typically prescribed as a once-daily dose, adjusted according to serum uric acid levels and patient response. It is essential to initiate therapy with caution, as Allopurinol may cause hypersensitivity reactions, including rash and, rarely, severe cutaneous adverse reactions. Regular monitoring of renal and hepatic function is recommended during treatment. Patients should be advised to maintain adequate hydration to minimize the risk of renal complications. Zyle 100 is contraindicated in individuals with known hypersensitivity to Allopurinol and should be used with caution in patients with impaired renal function. This medication should be taken under medical supervision to ensure optimal therapeutic outcomes and minimize adverse effects.