What are the mechanism of Allopurinol?

If one wants to prevent it from occurring, the process that makes the uric acid must be suppressed. Allopurinol combines with the enzyme Xanthine Oxidase and takes it out of action. This stops the oxidation process of xanthine and hypoxanthine and because of this uric acid production goes down preventing gout. Allopurinol is effective for preventing gout but wont treat acute attacks of it.