Allopurinol
Allopurinol Oral tablet
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.
This medicine may be used for other purposes; ask your health care provider or pharmacist if you have questions.
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.
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.
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
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.
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.
What side effects may I notice from receiving this medicine?
Side effects that you should report to your doctor or health care professional as soon as possible:
allergic reactions like skin rash, itching or hives, swelling of the face, lips, or tongue
breathing problems
muscle aches or pains
redness, blistering, peeling or loosening of the skin, including inside the mouth
Side effects that usually do not require medical attention (report to your doctor or health care professional if they continue or are bothersome):
changes in taste
diarrhea
indigestion
stomach pain or cramps
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.
Where should I keep my medicine?
Keep out of the reach of children.
Store at room temperature between 15 and 25 degrees C (59 and 77 degrees F). Protect from light and moisture. Throw away any unused medicine after the expiration date.
Allopurinol Sodium Solution for injection
What is this medicine?
ALLOPURINOL (al oh PURE i nole) reduces the amount of uric acid the body makes during chemotherapy. Too much uric acid in the blood can cause damage to your kidneys.
This medicine may be used for other purposes; ask your health care provider or pharmacist if you have questions.
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 disease
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?
The medicine is for infusion into a vein. It is given by a health care professional in a hospital or clinic setting.
Talk to your pediatrician regarding the use of this medicine in children. Special care may be needed.
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.
What if I miss a dose?
This does not apply.
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
chlorpropamide
cyclosporine
diuretics
mercaptopurine
probenecid
sulfinpyrazone
warfarin
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.
What should I watch for while using this medicine?
Your condition will be monitored carefully while you are receiving this medicine.
You may get drowsy or dizzy. Do not drive, use machinery, or do anything that needs mental alertness until you know how this medicine 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.
Drink plenty of water while you are taking this medicine. This will help to reduce the risk of getting gout or kidney stones.
What side effects may I notice from receiving this medicine?
Side effects that you should report to your doctor or health care professional as soon as possible:
allergic reactions like skin rash, itching or hives, swelling of the face, lips, or tongue
difficulty passing urine
loss of appetite
redness, blistering, peeling or loosening of the skin, including inside the mouth
unusual bleeding or bruising
unusually weak or tired
vomiting
yellowing of the skin or whites of the eyes
Side effects that usually do not require medical attention (report to your doctor or health care professional if they continue or are bothersome):
diarrhea
drowsiness
nausea
stomach pain
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.
Where should I keep my medicine?
This drug is given in a hospital or clinic and will not be stored at home.
Updated:  
March 21, 2017
Sources:  
U.S. FDA-approved Package Insert