Allopurinol can be taken by adults and sometimes children.
How and when to take it
The usual dose of allopurinol is 100mg to 300mg a day. Follow your doctor’s advice on how many tablets to take, and how many times a day.
Swallow the allopurinol tablets with water, ideally after food. You’ll usually take it once a day, but if you’re on a high dose, your doctor may advise you to split the dose and take it twice a day.
If your doctor has recommended you take allopurinol with lots of fluid, try to drink 2 to 3 litres of fluids every day.