What should I watch for?
It may take several months before you see the full effect of this medicine. It is only effective if you keep taking it regularly even if you have an attack of gout. Your prescriber or health care professional will prescribe other tablets to treat an acute attack.
Aspirin and non-steroidal antiinflammatory drugs like ibuprofen can make this medicine less effective. Do not treat yourself for headaches or pain. Ask your doctor or health care professional for advice.
Alcohol may interfere with the effect of this medicine. Avoid alcoholic drinks.
You may need to be on a special diet while taking this medicine. Check with your doctor. Also, ask how many glasses of fluid you need to drink a day. You must not get dehydrated.
This medicine can interfere with some urine glucose tests. If you use such tests talk with your health care professional.
Common and Rare Side Effects
Along with its needed effects, a medicine may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.
Check with your doctor immediately if any of the following side effects occur:
Fast or irregular breathing
puffiness or swellings of the eyelids or around the eyes
shortness of breath, troubled breathing, tightness in chest, or wheezing
changes in the skin color of the face occurring together with any of the other side effects listed here
Check with your doctor as soon as possible if any of the following side effects occur:
difficult or painful urination
lower back or side pain (especially if severe or sharp)
cough or hoarseness
fast or irregular breathing
pain in back and/or ribs
sores, ulcers, or white spots on lips or in mouth
sudden decrease in the amount of urine
swelling of face, fingers, feet, and/or lower legs
swollen and/or painful glands
unusual bleeding or bruising
unusual tiredness or weakness
yellow eyes or skin
Some side effects may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:
flushing or redness of face (occurring without any signs of an allergic reaction)
frequent urge to urinate
Other side effects not listed may also occur in some patients. If you notice any other effects, check with your healthcare professional.
Call your doctor for medical advice about side effects. You may report side effects to the FDA at 1-800-FDA-1088.