Description
Description
Zyloric (300mg) is a higher-strength formulation of Allopurinol manufactured by GSK Pakistan Limited, designed for patients whose gout or uric acid levels require a more substantial maintenance dose than the lower-strength option provides. As a xanthine oxidase inhibitor, Allopurinol works by reducing the amount of uric acid the body produces, helping to prevent the joint pain and inflammation associated with gout and supporting the long-term control of conditions linked to persistently high uric acid levels. This 300mg strength is commonly used once a patient’s dose has been gradually built up from a lower starting point, or when a doctor determines that a stronger single daily dose is the most practical way to reach target uric acid levels. The pack contains 30 tablets, intended for ongoing daily use as part of a long-term treatment plan under medical supervision.
Ingredients
Each Zyloric 300mg tablet contains Allopurinol as its active ingredient, at a strength three times that of the standard 100mg tablet. Allopurinol acts by blocking the enzyme responsible for converting purines into uric acid, which lowers the overall uric acid burden in the blood over time. The tablet also contains standard pharmaceutical excipients that give it its structure and support consistent, reliable dosing. These inactive components play no role in the medicine’s therapeutic action but are necessary for proper tablet formulation.
Dosage Form
Zyloric is supplied as an oral tablet, with each tablet containing 300mg of Allopurinol. This higher-strength oral form allows patients who require a larger daily dose to take fewer tablets while maintaining steady, effective uric acid control, and is typically used once a suitable maintenance dose has been established by the prescribing doctor.
Uses
Zyloric 300mg is used for the long-term management and prevention of gout in patients who need a higher daily dose of Allopurinol to keep uric acid levels within a healthy range. It is also prescribed for chronic hyperuricemia arising from kidney conditions, certain medications, or cancer treatments where uric acid production increases significantly. In some cases, it is used to help prevent uric acid-related kidney stones. As with the lower-strength tablet, Zyloric 300mg is intended for long-term prevention rather than for treating a sudden, acute gout flare-up.
How To Use
Zyloric 300mg tablets should be taken exactly as directed by a doctor, typically once daily, and preferably after a meal to reduce the likelihood of stomach discomfort. The tablet should be swallowed with a full glass of water, and patients are generally encouraged to drink plenty of fluids throughout treatment to support kidney function. This higher strength is usually reached gradually, after the doctor has confirmed the patient’s uric acid response and tolerance to lower doses. The medicine should be taken consistently every day and should not be stopped or adjusted without medical advice, since interrupting treatment can allow uric acid levels to rise again. If a dose is missed, it should be taken as soon as remembered, but if it is nearly time for the next dose, the missed one should be skipped rather than doubled.
Side Effects
Zyloric 300mg is generally well tolerated, though side effects can occur, and being a higher dose, some effects may be more pronounced in sensitive individuals. Commonly reported effects include nausea, stomach discomfort, and mild skin rash. Dizziness or drowsiness may also occur in some patients, so caution should be taken when driving or performing tasks that require alertness. As with any Allopurinol treatment, some patients may notice a temporary increase in gout flare-ups shortly after starting or increasing the dose, which is a recognized part of treatment adjustment. Rare but serious reactions include severe skin reactions and signs of liver involvement, such as yellowing of the skin or eyes, both of which require prompt medical attention.
Pregnancy & Breastfeeding
Pregnant or breastfeeding women should consult their doctor before using Zyloric 300mg. The safety of Allopurinol during pregnancy has not been fully established, and since it can pass into breast milk, its use during breastfeeding should only be undertaken under medical guidance, with the doctor weighing the benefits of treatment against any potential risk to the baby.
Storage Instructions
Store Zyloric 300mg tablets in a cool, dry place away from direct sunlight, moisture, and excessive heat. Keep the tablets in their original packaging until needed, and store them out of the reach of children. Do not use the tablets after the expiry date printed on the pack, and dispose of any unused or expired medicine appropriately rather than through household waste.
FAQS
Why would a doctor prescribe 300mg instead of 100mg? The 300mg strength is typically used once a patient’s maintenance dose has been established, allowing fewer tablets to be taken daily while still achieving effective uric acid control.
Can I switch to 300mg on my own if my gout isn’t improving? No, any change in Allopurinol dosage should only be made by a doctor, based on uric acid level monitoring and your response to treatment.
Is Zyloric 300mg used for treating a sudden gout attack? No, it is intended for long-term prevention and management, not for treating an acute flare-up, which usually requires different medication.
What should I do if I notice more joint pain after starting this dose? A temporary increase in flare-ups can occur when starting or adjusting Allopurinol treatment; contact your doctor if this happens rather than stopping the medicine on your own.
Disclaimer
Always use this medicine strictly according to your doctor’s instructions and prescribed dosage.






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