These are an isomer of hypoxanthine and inhibits the production of uric acid, a metabolite responsible urarthritis, by inhibiting the enzyme xanthine oxidase.

Allopurinol can besides become given by owning occasionally cancer treatments that increase uric acid (tumor lysis syndrome), when well as for kidney stones.

Allopurinol is an analogue of the natural purines in the body, & is quickly metabolised to oxipurinol which is also the xanthine oxidase inhibitor.

A side results of high levels of precursors come normally super minor.