Your family doctor must check your progress at regular appointments. Blood tests may be needed to make sure that this drug is help you and is not causing unwanted effects.
Drinking too much alcohol may increase the amount of uric acid in the blood and lessen the effects of allopurinol. Therefore, people with gout and other people with too much uric acid in the body must be careful to limit the amount of alcohol they drink.
Taking too much vitamin C may make the urine more acidic and increase the possibility of kidney stones forming while you are taking allopurinol. Therefore, check with your family doctor before you take vitamin C while taking this drug.
Check with your family doctor immediately :
Very rarely, these effects may be the first signs of a serious reaction to the drug.
Allopurinol may cause some people to become drowsy or less alert than they are normally Make sure you know how you react to this drug before you drive, use machines, or do anything else that could be dangerous if you are not alert .