100 mg: Each Zyloric Tablet contains 100mg of the active ingredient allopurinol (Ph. Eur.).
300 mg: Each Zyloric Tablet contains 300mg of the active ingredient allopurinol.
Excipients/Inactive Ingredients: Lactose monohydrate, Maize starch, Povidone, Magnesium stearate, Purified water.