Allopurinol 300 mg PER TABLET

Allopurinol 300 mg PER TABLET
List Price: $0.99
Sale Price: $0.12
Code: allo300
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Product Info:

Allopurinol is used for the prevention of urate urinary stones by reducing the production of uric acid in your body. Allopurinol comes as a tablet to take by mouth. It is usually taken once or twice a day, preferably after a meal. To help you remember to take allopurinol, take it around the same time every day. Follow the directions on your prescription label carefully, and ask your doctor or pharmacist to explain any part you do not understand. Take allopurinol exactly as directed. Do not take more or less of it or take it more often than prescribed by your doctor. Allopurinol comes in tablets of two different strengths: 100 mg and 300 mg.




  • Prevents recurrent urate bladder stones
  • Especially good for breeds prone to blood flow abnormalities

How it works:

Allopurinol belongs to a class of drugs called xanthine oxidase inhibitors which prevent the accumulation of uric acid. If uric acid accumulates in the body, crystals form in the urine which may congregate to produce kidney or bladder stones.


Store in a cool dry place. Keep out of the reach of children.

Allopurinol should be given with meals. Water should be kept available for your pet. Allopurinol may cause drowsiness.
  • Allopurinol is a prescription medication used in dogs for the prevention of urate bladder stones.
  • Allopurinol is not FDA approved for use in veterinary medicine; however, it is a commonly accepted practice for veterinarians to prescribe this medication for dogs.
  • Allopurinol should be used in adult dogs only. Do not use in puppies, kittens, or cats.
Weight Dosage
All weights Give 5 mg/lb of dog's body weight once a day with food.


Keep out of the reach of children and pets. Use with caution in pets with low renal or hepatic function. This medication may not be safe for use in pregnant or nursing animals. Do not use in pets with known hypersensitivity to this drug. Allopurinol may interact with some other medications. Therefore, it is important that you inform your veterinarian of any and all medications your pet may be taking. This is especially true if your pet is currently taking azathioprine, mercaptopurine, and warfarin. Finally, if you notice any behavioral or physiological changes in your pet while administering this medication, contact your veterinarian immediately.

Possible Side Effects:

Allopurinol may cause drowsiness. If any of the following serious side effects occur, stop giving allopurinol and seek emergency veterinary medical attention; an allergic reaction (difficulty breathing; swelling of the lips, tongue or face; hives), blood in the urine or pain when urinating, a rash, eye irritation, fever, chills or joint aches or severe nausea or vomiting. Other less serious side effects may occur. Continue giving allopurinol and talk to your veterinarian if your pet experiences upset stomach or diarrhea, dizziness or drowsiness or an acute attack of arthritis. Other side effects may also occur. Talk to your veterinarian about any side effect that seems unusual or bothersome to your pet.