Drugs A - Z

Allopurinol Oral tablet

It is used to treat the symptoms of gout

Generic Name: allopurinol  |  Brand Name: Lopurin

Brand Names: Zyloprim, Lopurin

What is this medicine?

ALLOPURINOL (al oh PURE i nole) reduces the amount of uric acid the body makes. It is used to treat the symptoms of gout. It is also used to treat or prevent high uric acid levels that occur as a result of certain types of chemotherapy. This medicine may also help patients who frequently have kidney stones.

What should I tell my health care provider before I take this medicine?

They need to know if you have any of these conditions:
  • kidney or liver disease
  • an unusual or allergic reaction to allopurinol, other medicines, foods, dyes, or preservatives
  • pregnant or trying to get pregnant
  • breast feeding

How should I use this medicine?

Take this medicine by mouth with a glass of water. Follow the directions on the prescription label. If this medicine upsets your stomach, take it with food or milk. Take your doses at regular intervals. Do not take your medicine more often than directed.

Talk to your pediatrician regarding the use of this medicine in children. Special care may be needed. While this drug may be prescribed for children as young as 6 years for selected conditions, precautions do apply.

What if I miss a dose?

If you miss a dose, take it as soon as you can. If it is almost time for your next dose, take only that dose. Do not take double or extra doses.

What may interact with this medicine?

Do not take this medicine with the following medication:
  • didanosine, ddI

This medicine may also interact with the following medications:

  • amoxicillin or ampicillin
  • azathioprine
  • certain medicines used to treat gout
  • certain types of diuretics
  • chlorpropamide
  • cyclosporine
  • dicumarol
  • mercaptopurine
  • tolbutamide
  • warfarin

What should I watch for while using this medicine?

Visit your doctor or health care professional for regular checks on your progress. If you are taking this medicine to treat gout, you may not have less frequent attacks at first. Keep taking your medicine regularly and the attacks should get better within 2 to 6 weeks. Drink plenty of water (10 to 12 full glasses a day) while you are taking this medicine. This will help to reduce stomach upset and reduce the risk of getting gout or kidney stones.

Call your doctor or health care professional at once if you get a skin rash together with chills, fever, sore throat, or nausea and vomiting, if you have blood in your urine, or difficulty passing urine.

Do not take vitamin C without asking your doctor or health care professional. Too much vitamin C can increase the chance of getting kidney stones.

You may get drowsy or dizzy. Do not drive, use machinery, or do anything that needs mental alertness until you know how this drug affects you. Do not stand or sit up quickly, especially if you are an older patient. This reduces the risk of dizzy or fainting spells. Alcohol can make you more drowsy and dizzy. Alcohol can also increase the chance of stomach problems and increase the amount of uric acid in your blood. Avoid alcoholic drinks.


Last Updated: June 22, 2009
Licensed from
The Healthline Site, its content, such as text, graphics, images, search results, HealthMaps, Trust Marks, and other material contained on the Healthline Site ("Content"), its services, and any information or material posted on the Healthline Site by third parties are provided for informational purposes only. None of the foregoing is a substitute for professional medical advice, examination, diagnosis, or treatment. Always seek the advice of a physician or other qualified healthcare provider with any questions you may have regarding a medical condition. Never disregard professional medical advice or delay in seeking it because of something you have read on the Healthline Site. If you think you may have a medical emergency, call your doctor or 911 immediately. Please read the Terms of Service for more information regarding use of the Healthline Site.
Advertisement