Allopurinol
Also sold as: Zyloric
Prescription neededGout
Comes as:Tablet
Usual adult dose: start with 100 mg once a day after food, increased slowly by your doctor (commonly 100 to 300 mg a day) based on uric acid levels. It is usually started once a gout attack has settled. Drink plenty of water.
Your doctor may give you a different dose. Children's doses depend on weight.
Stop taking it and see a doctor straight away if you notice:
Medicines that can react with this one.
Allopurinol greatly raises azathioprine levels and can cause severe bone marrow damage; the azathioprine dose must be cut sharply or avoided.
Allopurinol can increase the effect of warfarin; INR should be checked.
Skin rash is more common when amoxicillin is taken with allopurinol.
Skin rash is more common when ampicillin is taken with allopurinol.