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    Information about Allopurinol

    Allopurinol uses

    Allopurinol is used in the treatment of gout.

    How allopurinol works

    Allopurinol is a xanthine oxidase inhibitor. It works by decreasing blood uric acid, which is the chemical that causes gout.

    Common side effects of allopurinol

    Skin rash, Diarrhea, Nausea
    Content Details
    Written By
    Dr. Betina Chandolia
    MDS, BDS
    Reviewed By
    Dr. Lalit Kanodia
    MD (Pharmacology), MBBS
    Last updated on:
    02 Jan 2020 | 09:55 AM (IST)
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    Read Our Editorial Policy

    Available Medicine for Allopurinol

    • ₹20 to ₹82
      Glaxo SmithKline Pharmaceuticals Ltd
      2 variant(s)
    • ₹21 to ₹72
      Cipla Ltd
      2 variant(s)
    • ₹20 to ₹65
      Cipla Ltd
      2 variant(s)
    • ₹18 to ₹72
      Inga Laboratories Pvt Ltd
      2 variant(s)
    • ₹29
      Intas Pharmaceuticals Ltd
      1 variant(s)
    • ₹19 to ₹70
      Organic Laboratories
      2 variant(s)
    • ₹10 to ₹152
      Psychotropics India Ltd
      2 variant(s)
    • ₹22 to ₹57
      Cipla Ltd
      2 variant(s)
    • ₹9
      Sun Pharmaceutical Industries Ltd
      1 variant(s)
    • ₹25
      Ind Swift Laboratories Ltd
      1 variant(s)

    Expert advice for Allopurinol

    • Your doctor has prescribed Allopurinol to reduce episodes of gout attack.
    • Take Allopurinol with food to avoid stomach upset.
    • Take plenty of fluids (2-3 litres) daily while on Allopurinol.
    • Notify your doctor if you develop a rash. This could be a sign of allergy and should go away on discontinuing Allopurinol.
    • When you first start taking this medicine, you might have more gout attacks. Do not stop Allopurinol on having an acute attack of gout as that could make an attack worse.
    • Your doctor may check your liver function before starting treatment and regularly thereafter. Inform your doctor if you notice yellowing of eyes or skin, dark urine, or stomach pain.
    • Do not consume alcohol while taking this medicine as it may cause your gout to flare up.

    Frequently asked questions for Allopurinol


    Q. What is the best time of the day to take Allopurinol?

    Allopurinol can be taken at anytime of the day but preferably should be taken at the same time each day so that you remember to take it. It is usually prescribed once daily and should be taken after meals. If the dose exceeds 300 mg or if your stomach is upset, you can take it in divided doses as advised by your doctor.

    Q. Why do I still get gout while taking Allopurinol?

    If you have started taking Allopurinol, you may experience an increase in attacks of gout (severe pain, swelling, and redness). However, these attacks usually become shorter and less severe after several months of therapy. The possible reason for increased attacks could be gradual breakdown of uric acid crystals, causing fluctuations in uric acid levels in the blood. To prevent such painful events, your doctor may advise to take colchicine with Allopurinol, as it can suppress the gouty attacks.

    Q. Is Allopurinol an anti-inflammatory?

    No, Allopurinol is not an anti-inflammatory medicine. It belongs to enzyme inhibitors class of medicines. It inhibits uric acid-forming key enzyme known as xanthine oxidase. This results in decreased production of uric acid which reduces the attacks of gout. Additionally, it may help in prevention of uric acid kidney stones.

    Q. Is Allopurinol bad for the liver?

    Yes, Allopurinol use may cause liver problems. The doctor may advise to get your blood tests done to check how well your liver is working before and during treatment with Allopurinol. Inform your doctor if you experience symptoms like fatigue, loss of appetite for several days or longer, pain, aching, or tenderness on the right side of the abdomen. Other symptoms which require doctor’s attention includes dark or “tea-colored” urine, jaundice (yellowing of skin or the white part of your eyes).

    Q. How long does it take for Allopurinol to lower uric acid levels?

    It may take several months before you start feeling better or notice any significant reduction in attacks of gout (severe pain, swelling, and redness). Initially after starting Allopurinol you may experience gouty attacks. Continue taking Allopurinol even if you do not experience any considerable relief from the attacks. Do not stop taking Allopurinol without consulting your doctor. Your doctor will prescribe you another medicine along with Allopurinol to prevent the initial attacks. It may take up to years for the body to completely get rid of all uric acid crystals.

    Q. What if I take alcohol while taking Allopurinol?

    You should refrain yourself from consuming alcohol while taking Allopurinol as this could make your condition worse. Also, you should avoid all foods that are rich source of proteins as it will help to prevent attacks of gout. Consult your doctor for a detailed list of food items which need to be avoided. It is also recommended that you drink at least 8 glasses of water or other fluids while taking Allopurinol, unless your doctor has advised otherwise.

    Q. Does Allopurinol cause drowsiness?

    Yes, Allopurinol may cause drowsiness in some people. It can even make you feel giddy (dizzy) or you may have problems with coordination. It would be best to avoid driving or operating machinery if you experience these side effects. However, if it is unavoidable then extreme caution should be exercised while performing such tasks.

    Content on this page was last updated on 02 January, 2020, by Dr. Varun Gupta (MD Pharmacology)