Allopurinol is a medication that treats gout or kidney stones. It can also prevent high uric acid levels after chemotherapy. It works by decreasing uric acid levels in your body. The brand name of this medication is Zyloprim®.
ALLOPURINOL (al oh PURE i nole) treats gout or kidney stones. It may also be used to prevent high uric acid levels after chemotherapy. It works by decreasing uric acid levels in your body.
This medicine may be used for other purposes; ask your health care provider or pharmacist if you have questions.
COMMON BRAND NAME(S): Zyloprim
They need to know if you have any of these conditions:
Take this medication by mouth with a glass of water. Follow the directions on the prescription label. If this medication upsets your stomach, take it with food or milk. Take your doses at regular intervals. Do not take your medication more often than directed.
Talk to your care team regarding the use of this medication in children. Special care may be needed. While this medication may be prescribed for children as young as 6 years for selected conditions, precautions do apply.
Overdosage: If you think you have taken too much of this medicine contact a poison control center or emergency room at once.
NOTE: This medicine is only for you. Do not share this medicine with others.
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.
Do not take this medication with the following:
This medication may also interact with the following:
This list may not describe all possible interactions. Give your health care provider a list of all the medicines, herbs, non-prescription drugs, or dietary supplements you use. Also tell them if you smoke, drink alcohol, or use illegal drugs. Some items may interact with your medicine.
Visit your care team for regular checks on your progress. If you are taking this medication to treat gout, you may not have less frequent attacks at first. Keep taking your medication 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 medication. This will help to reduce stomach upset and reduce the risk of getting gout or kidney stones.
Call your care team 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.
This medication may cause serious skin reactions. They can happen weeks to months after starting the medication. Contact your care team right away if you notice fevers or flu-like symptoms with a rash. The rash may be red or purple and then turn into blisters or peeling of the skin. Or, you might notice a red rash with swelling of the face, lips or lymph nodes in your neck or under your arms.
Do not take vitamin C without asking your care team. 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 medication 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.
Side effects that you should report to your care team as soon as possible:
Side effects that usually do not require medical attention (report to your care team if they continue or are bothersome):
This list may not describe all possible side effects. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
Keep out of the reach of children and pets.
Store at room temperature between 15 and 25 degrees C (59 and 77 degrees F). Protect from light and moisture. Throw away any unused medication after the expiration date.
NOTE: This sheet is a summary. It may not cover all possible information. If you have questions about this medicine, talk to your doctor, pharmacist, or health care provider.
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Note: Introduction and Additional Common Questions written and medically approved by Cleveland Clinic professionals.