Allopurinol is a xanthine-oxidase inhibitor. Allopurinol and its main metabolite oxipurinol lower the level of uric acid in plasma and urine by inhibition of xanthine oxidase, the enzyme catalyzing the oxidation of hypoxanthine to xanthine and xanthine to uric acid.
This medicinal substance has been classified in the anatomical therapeutic chemical (ATC) classification according to its main therapeutic use as follows:
Allopurinol is the active ingredient of these drugs:
Netherlands
Hong Kong
Hong Kong
Germany
Finland
Hong Kong
Hong Kong
Tunisia
Australia
Poland
Austria
Poland
United States
Cyprus
Finland
Poland
Hong Kong
Germany
Hong Kong
Austria
Brazil
Lithuania Poland
Australia
Hong Kong
Austria Tunisia
Hong Kong
Hong Kong
Ireland
United Kingdom
Austria Singapore
Cyprus
Australia Canada United States
Austria Brazil Cyprus France Hong Kong
Allopurinol is also found within below combination drugs:
Medicine agencies around the world have authorized marketing of this active ingredient according to these medication package inserts (MPIs):