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Allopurinol 300mg Tablets
Medically Reviewed by – Dr. Leo Barrett, MD
Last Updated on 8 July 2026

Allopurinol 300mg Tablets

$0.45 $0.55
Allopurinol 300 mg is used to treat gout, kidney stones, and tophi (uric acid deposits in tissues), which are caused by excessive levels of uric acid in the blood. It is also used to prevent elevated blood uric acid levels in patients undergoing cancer chemotherapy. Allopurinol works by reducing the production of uric acid in your body. This medicine may also be used to treat other conditions as determined by your doctor.
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Allopurinol 300mg Tablets CouponCoupon DescriptionCoupon Expiry Date
SUNNY28Summer Spectacular Sale2026-07-31
Categories: Kidney StonesTag: Pills

What is Allopurinol 300mg used for?

Allopurinol 300mg is used to treat gout, kidney stones, and tophi (uric acid deposits in tissues), which are caused by excessive levels of uric acid in the blood. It is also used to prevent elevated blood uric acid levels in patients undergoing cancer chemotherapy. Allopurinol works by reducing the production of uric acid in your body. This medicine may also be used to treat other conditions as determined by your doctor.

What are the side effects of Allopurinol 300mg?

Common side effects of allopurinol 300 mg are usually mild, but some can be serious. Always tell your GP if symptoms persist or worsen.
  • Skin rash or itching – may signal an allergic reaction
  • Nausea, vomiting, or stomach upset
  • Diarrhoea or loss of appetite
  • Tiredness or drowsiness
  • Headache or dizziness
  • Joint or muscle aches early in treatment
Serious signs: fever, mouth ulcers, yellowing skin, or easy bruising-seek medical help immediately

What is the recommended dosage of Allopurinol?

The dosage of Allopurinol prescribed to each patient will vary. Always follow your physician’s instructions and/or the directions on the prescription drug label.

What if you miss a dose of Allopurinol?

If your physician has instructed or directed you to take Allopurinol medication in a regular schedule and you have missed a dose of this medicine, take it as soon as you remember. However, if it is almost time for your next dose, then skip the missed dose and go back to your regular dosing schedule. Do not double the doses unless otherwise directed.

What if you overdose on Allopurinol?

Any medication taken in excess can have serious consequences. If you suspect an overdose of Allopurinol, seek medical attention immediately.

What other drugs could interact with Allopurinol 300mg?

It may be noted that drugs other than those listed above may also interact with Allopurinol. Usually drug interactions occur when it is taken with another drug or with food. Before you take a medication for a particular ailment, you should inform the health expert about intake of any other medications including non-prescription medications, over-the-counter medicines that may increase the effect of Allopurinol, and dietary supplements like vitamins, minerals and herbal, so that the doctor can warn you of any possible drug interactions. Allopurinol can interact with blood thinners and antibiotics. Do let your doctor know if you smoke, consume alcohol or caffeinated drinks, or use illegal drugs as these may interfere with the action of your medication. Make sure to inform your doctor of any medical conditions you may have, or any family history of medical problems. Do not start or stop using any medicine without consulting your doctor.

Where can I buy Allopurinol 300mg over the counter?

A high uric acid level can lead the gout or gouty arthritis like condition (including joint pain and inflammation). Allopurinol over the counter medication is a xanthine oxidase inhibitor that works by decreasing the uric acid that is produced by the body. This Allopurinol alternative or branded Allopurinol is available only with the doctor's prescription and Allopurinol without prescription is not available.

What are the difference between allopurinol 100 mg vs 300 mg?

The main difference between allopurinol 100 mg and 300 mg lies in the strength and dose required to control uric acid levels. Doctors usually start with 100 mg to reduce side effects, then increase to 300 mg if needed for better control. Both contain the same active ingredient, but the higher dose suits people needing stronger urate-lowering effects.

What is the allopurinol 300 mg price in the UK?

The price of allopurinol 300 mg in the UK can vary depending on the pharmacy and brand. It’s generally affordable, whether obtained through an NHS prescription or a private pharmacy. Online UK-registered pharmacies may also offer competitive prices. Always ensure you’re buying from a trusted, regulated source to guarantee genuine medication and safe delivery.

Can I buy Allopurinol 300mg without a prescription?

Allopurinol 300mg without prescription is used to treat gout and kidney stones. It is also prescribed for having some types of cancer treatment. Some treatments can also lead to build-up of uric acid. This medicine comes as 100mg and 300mg tablets and is only available on prescription.

Is home remedy for gout will go away?

Home remedies can ease gout symptoms but may not make it completely go away without proper treatment. Drinking water, resting the joint, and avoiding alcohol or rich foods can help. Cold compresses and eating cherries may reduce swelling. However, long-term control usually needs medical advice to manage uric acid levels and prevent future attacks.

What are the questions to ask your doctor before taking Allopurinol 300mg tablet?

Is it possible for me to take Allopurinol with other drugs? Should certain beverages, foods and other products be avoided when I take Allopurinol? What are the possible drug interactions of Allopurinol? How will Allopurinol work in my body? How should Allopurinol be taken? How to reduce the risk of Allopurinol drug interactions and side effects?

Warnings and Precautions

The health and medical information provided here is intended to supplement and not substitute for the expertise and judgment of your physician, pharmacists or other health care professional. It should not be understood to indicate that the use of Allopurinol is safe, appropriate or effective for you. Always consult your health care professional before using this, or any other, drug.

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