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You are here : 3-RX.com > Drugs & Medications > Detailed Drug Information (USP DI) > Allopurinol : Side Effects

Allopurinol (Systemic)

Brand Names : Aloprim, Zyloprim, Apo-Allopurinol, Purinol

Allopurinol | Before Using | Proper Use | Precautions | Side Effects

Side Effects of This Medicine

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.

Stop taking this medicine and check with your doctor immediately if any of the following side effects occur:

    More common

      Skin rash or sores, hives, or itching

    Rare

      Black, tarry stools; bleeding sores on lips; blood in urine or stools; chills, fever, muscle aches or pains, nausea, or vomiting - especially if occurring with or shortly after a skin rash; difficult or painful urination; pinpoint red spots on skin; redness, tenderness, burning, or peeling of skin; red and/or irritated eyes; red, thickened, or scaly skin; shortness of breath, troubled breathing, tightness in chest, or wheezing; sores, ulcers, or white spots in mouth or on lips; sore throat and fever; sudden decrease in amount of urine; swelling in upper abdominal (stomach) area; swelling of face, fingers, feet, or lower legs; swollen and/or painful glands; unusual bleeding or bruising; unusual tiredness or weakness; weight gain (rapid); yellow eyes or skin

Also, check with your doctor as soon as possible if any of the following side effects occur:

    Rare

      Loosening of fingernails; numbness, tingling, pain, or weakness in hands or feet; pain in lower back or side; unexplained nosebleeds

Other 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. However, check with your doctor if any of the following side effects continue or are bothersome:

    Less common or rare

      Diarrhea; drowsiness; headache; indigestion; nausea or vomiting occurring without a skin rash or other side effects; stomach pain occurring without other side effects; unusual hair loss

Other side effects not listed above may also occur in some patients. If you notice any other effects, check with your doctor.


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Allopurinol: Precautions

   


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