Allopurinol 300 mg Tablet: Complete Guide to Uses, Side Effects, Dosage, and Safety
Clinical Reference Standards: CDSCO (Central Drugs Standard Control Organisation), Indian Pharmacopoeia (IP) & WHO | Last Updated: September 2026
When to Call Your Doctor IMMEDIATELY
- A new rash, especially with fever, sore mouth, or blisters
- Peeling or painful skin, or swelling of the face, lips, or throat
- Yellowing of the eyes or skin, dark urine, or severe right upper abdominal pain
- Fever with sore throat, unusual bruising, or bleeding
- Reduced urine output or swelling of the legs or face
- Severe abdominal pain radiating to the back, with vomiting
- Chest pain, difficulty breathing, or fainting
- Sudden severe joint pain with redness and swelling that does not improve
If experiencing severe symptoms, call emergency services immediately.
What is alloric 300mg tablet used for?
Allopurinol 300 mg is an oral prescription tablet used to lower high uric acid levels in gout and to prevent uric acid kidney stones and tumour lysis syndrome. It works by blocking xanthine oxidase, the enzyme that makes uric acid. It does not treat an acute gout attack and may even trigger one when started, so doctors often prescribe anti-inflammatory cover. Regular blood tests and plenty of fluids are important while taking it.
- Generic Name: Allopurinol (300mg)
- Manufacturer: Parasol Laboratories
- Form: Allopathy
- Pregnancy Category: Consult doctor
- Prescription Required: Yes
🇮🇳 alloric 300mg tablet के बारे में (Hindi Summary)
उपयोग: यह दवा मुख्य रूप से गाउट (गठिया का एक प्रकार) और खून में यूरिक एसिड बढ़ने की समस्या में इस्तेमाल होती है। यह शरीर में यूरिक एसिड बनाने वाले एंजाइम को रोककर यूरिक एसिड का स्तर धीरे-धीरे कम करती है, जिससे गाउट के दौरे कम आते हैं और जोड़ों में जमा यूरिक एसिड की गांठें (टोफी) छोटी होती हैं। यह किडनी में यूरिक एसिड की पथरी बनने से बचाने और कैंसर कीमोथेरेपी के दौरान यूरिक एसिड अचानक बढ़ने (ट्यूमर लाइसिस सिंड्रोम) को रोकने में भी मदद करती है। ध्यान रखें कि यह दवा गाउट के तेज दर्द वाले दौरे को तुरंत ठीक नहीं करती; दौरा शुरू होने पर डॉक्टर की सलाह के बिना इसे शुरू या बंद न करें।
साइड इफेक्ट्स: इस दवा से आमतौर पर हल्के दुष्प्रभाव होते हैं, जैसे त्वचा पर चकत्ते या खुजली, जी मिचलाना, दस्त, पेट में असहजता, सिरदर्द, और लिवर एंजाइम का अस्थायी रूप से बढ़ना। कभी-कभी शुरुआत में गाउट का दौरा बढ़ सकता है, लेकिन इसका मतलब यह नहीं कि दवा काम नहीं कर रही। गंभीर दुष्प्रभाव दुर्लभ हैं, लेकिन त्वचा पर गंभीर प्रतिक्रिया, बुखार, मुंह में छाले, त्वचा का छिलना, आंखों या त्वचा का पीला पड़ना, गहरे रंग का पेशाब, या खून की गड़बड़ी हो सकती है। ऐसे लक्षण दिखने पर दवा तुरंत बंद करें और डॉक्टर से मिलें।
सुरक्षा सलाह: यह दवा सिर्फ डॉक्टर की सलाह पर ही लें और किसी और के साथ साझा न करें। गोली को पानी के साथ निगलें, बेहतर होगा कि खाने के बाद लें ताकि पेट में जलन न हो। दिनभर पर्याप्त पानी पिएं, क्योंकि इससे किडनी में यूरिक एसिड की पथरी बनने का खतरा कम होता है। शराब, खासकर बीयर और स्पिरिट, से बचें क्योंकि इससे यूरिक एसिड बढ़ता है और गाउट का दौरा आ सकता है। अपनी सभी दवाओं, विटामिन और हर्बल उत्पादों की जानकारी डॉक्टर को दें, खासकर अज़ैथियोप्रिन, मर्कैप्टोप्यूरीन और वॉरफेरिन के बारे में। नियमित खून की जांच कराते रहें, भले ही आप ठीक महसूस करें। गर्भावस्था, गर्भधारण की योजना या स्तनपान के दौरान डॉक्टर से सलाह लें। त्वचा पर चकत्ते, बुखार या एलर्जी के लक्षण दिखने पर दवा बंद करके तुरंत डॉक्टर से मिलें।
💊 alloric 300mg tablet Uses & Benefits
[{"condition":"Chronic gout and hyperuricaemia","description":"Lowers serum uric acid over weeks and reduces the frequency of painful gout flares and the formation of tophi when taken regularly.","evidence":"Well-established"},{"condition":"Uric acid kidney stones","description":"Reduces uric acid production and helps prevent recurrent uric acid stones, especially when combined with good fluid intake and urine alkalinisation.","evidence":"Well-established"},{"condition":"Tumour lysis syndrome prevention","description":"Used before and during chemotherapy in patients at risk of rapid cancer cell breakdown, to prevent dangerous rises in uric acid and kidney injury.","evidence":"Well-established"},{"condition":"Recurrent calcium oxalate stones with hyperuricosuria","description":"May be used in selected patients whose urine contains too much uric acid, to reduce stone formation.","evidence":"Moderate"}]
Off-label uses: [{"condition":"Angina pectoris","description":"Some small studies have explored whether allopurinol improves exercise tolerance in angina, but this is not a standard use.","evidence":"Limited"},{"condition":"Inflammatory bowel disease","description":"Occasional reports suggest possible benefit in ulcerative colitis, but evidence is not strong enough for routine use.","evidence":"Limited"},{"condition":"Cardiovascular risk reduction","description":"Observational data have suggested possible benefits in heart failure and ischaemic heart disease, but this remains investigational.","evidence":"Limited"}]
Primary treatment for: Gout and hyperuricaemia
Also treats: Uric acid kidney stones, Tumour lysis syndrome prevention, Hyperuricosuria with calcium oxalate stones
📋 Drug Information
| Generic Name(s) | Allopurinol (300mg) |
| Brand Name | alloric 300mg tablet |
| Manufacturer | Parasol Laboratories |
| Packaging / Form | Varies by brand (Allopathy) |
| Therapeutic Class | PAIN ANALGESICS |
| Action Class | Xanthine oxidase Inhibitors-gout |
| Route of Administration | Oral |
| Storage | Store this medicine at room temperature, between 15°C and 30°C, in a dry place. Keep it in the original container, tightly closed, and away from direct sunlight, heat, and moisture. Do not store it in the bathroom. Keep all medicines out of the reach of children and pets. |
| Shelf Life | The shelf life is usually 24 to 36 months from the date of manufacture, depending on the manufacturer. Always check the expiry date printed on the pack and do not use the medicine after that date. |
| WHO Guideline | Not established from the available information. Allopurinol is included in many international and national guidelines for gout and tumour lysis syndrome, but specific WHO recommendations are not confirmed here. |
| ICMR Guideline | Not established from the available information. Indian guidelines generally support urate-lowering therapy for gout, but specific ICMR recommendations for this product are not confirmed here. |
👨⚕️ Doctor's Practical Tips
Evidence-based practical advice from experienced clinicians
🔍 Is This Medicine Right for Your Symptom?
Educational reference. Always consult a doctor for diagnosis.
🔬 How This Medicine Works (Pharmacology)
Pharmacokinetics
How It Works
This medicine works by inhibiting xanthine oxidase, the enzyme that converts hypoxanthine to xanthine and xanthine to uric acid. When this enzyme is blocked, uric acid production falls and the body gradually clears the uric acid already present. Because uric acid levels drop, urate crystals in joints and tissues can dissolve over months, which reduces gout attacks and tophi. The effect is not immediate, and it may take several weeks to months for the full benefit to appear.
Mechanism Steps
💡 How to Take alloric 300mg tablet
Strength: This product is an immediate-release oral tablet containing allopurinol 300 mg.
Dosage Information
| Adult Dosage | The usual starting dose for adults with gout is often 100 mg once daily, and the dose is then adjusted every few weeks according to serum uric acid levels, kidney function, and tolerability. Many patients need 200 mg to 300 mg daily, and some need higher doses, but the maximum daily dose should not exceed 900 mg. In tumour lysis syndrome, higher doses may be used under specialist supervision. Dose must be individualized by a qualified clinician based on indication, age, weight, renal and hepatic function, and other medicines being taken. |
| Pediatric Dosage | Pediatric dosing is not established from available information for this tablet. Allopurinol is sometimes used in children for specific conditions such as tumour lysis syndrome or certain metabolic disorders, but only under specialist supervision. Consult a pediatrician. |
| Elderly Dosage | Older adults often have reduced kidney function, which can raise blood levels of allopurinol and its metabolite. Doctors usually start with a lower dose and adjust based on kidney function and uric acid levels. Regular monitoring of kidney function, liver function, and blood counts is especially important in this age group. |
| Renal Impairment | Because allopurinol and oxypurinol are cleared by the kidneys, the dose must be reduced in people with kidney impairment. Doctors commonly start with a lower dose, such as 50 to 100 mg daily, and increase slowly while monitoring uric acid levels and kidney function. In severe kidney disease, specialist advice is needed and the dose may need to be given less often. |
| Hepatic Impairment | In people with liver disease, allopurinol should be used with caution. Doctors may start with a lower dose and monitor liver function tests regularly. If liver enzymes rise significantly or symptoms of liver injury appear, the medicine may need to be stopped. |
| Maximum Daily Dose | The maximum recommended daily dose is 900 mg, but most patients need much less. Doses above 300 mg are often given in divided doses. The exact maximum for an individual is decided by the doctor based on the condition being treated and kidney function. |
Dosage Timeline
🍽️ Food Timing Guide
⏰ What to Do If You Miss a Dose
⚠️ Side Effects of alloric 300mg tablet
✅ Common Side Effects
🚨 Serious Side Effects
⚠️ Rare Side Effects
Consult your doctor if you experience any unusual symptoms.
🔬 Drug Interactions
| Drug | Severity | Effect |
|---|---|---|
| Azathioprine | Major | |
| Mercaptopurine | Major | |
| Warfarin | Major | |
| Thiazide diuretics | Moderate | |
| Amoxicillin or ampicillin | Moderate | |
| Loop diuretics | Moderate | |
| ACE inhibitors | Moderate | |
| Phenytoin | Moderate | |
| Theophylline | Moderate | |
| Cyclosporine | Moderate |
🚨 Major Interactions
- Azathioprine
- Mercaptopurine
- Warfarin
- Thiazide diuretics
- Amoxicillin or ampicillin
⚡ Moderate Interactions
- Loop diuretics such as furosemide
- Angiotensin-converting enzyme inhibitors
- Phenytoin
- Theophylline
- Cyclosporine
🍷 Alcohol Interaction
Alcohol, particularly beer and spirits, can raise blood uric acid and trigger gout attacks. Drinking alcohol while taking this medicine may reduce its benefit and increase the chance of a flare. It is best to avoid alcohol or keep it to a minimum, and to discuss any alcohol use with your doctor.
🔎 Check Your Other Medicines
Educational tool. Always confirm with your doctor or pharmacist.
🛡️ Safety & Warnings
🚫 Contraindications
["Known hypersensitivity or allergy to allopurinol or any ingredient in the tablet","Previous severe reaction to allopurinol, such as Stevens-Johnson syndrome or DRESS","Acute gout attack, unless the doctor has specifically decided to start or continue treatment","Use with azathioprine or mercaptopurine without specialist supervision and dose adjustment","Severe liver disease, unless the doctor decides the benefit outweighs the risk","Pregnancy and breastfeeding, unless clearly needed and advised by a doctor"]
⚠️ Warnings & Precautions
["Serious skin reactions can occur, so any rash, blister, or sore mouth should be reported immediately and the medicine stopped.","Gout attacks may become more frequent in the first weeks or months of treatment; this does not mean the medicine is not working.","People with kidney or liver disease may need a lower dose and closer monitoring.","Patients of Han Chinese, Thai, Korean, or other high-risk ancestry may be advised to have HLA-B*5801 testing before starting, because this gene increases the risk of severe skin reactions.","Drink enough water to keep urine dilute and reduce the risk of uric acid stones.","Avoid alcohol and high-purine foods to get the best effect.","Do not stop or change the dose without talking to your doctor.","Tell your doctor about all other medicines, especially azathioprine, mercaptopurine, and warfarin."]
🤱 Lactation Safety
Allopurinol and its metabolite oxypurinol pass into breast milk. Because there is limited information on safety during breastfeeding, this medicine should be used only if clearly needed and after discussion with your doctor, who may consider monitoring the baby for any unusual effects.
💊 Overdose Management
Taking too much of this medicine can cause nausea, vomiting, dizziness, and diarrhoea, and in severe cases it may worsen kidney or liver function. If you suspect an overdose, contact your doctor or a poison control centre immediately and go to the nearest emergency department. Treatment is supportive, with monitoring of vital signs, kidney function, liver function, and blood counts. There is no specific antidote, and dialysis may be considered in severe cases with kidney failure.
⏰ Missed Dose
If you miss a dose, take it as soon as you remember, provided it is not almost time for the next dose. If it is nearly time for the next dose, skip the missed dose and continue with your regular schedule. Do not take two doses at the same time to make up for a missed one. If you are unsure, contact your doctor or pharmacist.
Additional Safety Advice
Take this medicine only when a qualified doctor has prescribed it for you, and never share it with anyone else. Swallow the tablet whole with a full glass of water, preferably after food, to reduce stomach upset. Drink plenty of water and other fluids each day unless your doctor has told you to limit fluids, because good hydration helps prevent uric acid crystals from forming in the kidneys. Do not start or stop this medicine on your own, and do not change the dose without medical advice. Tell your doctor about all other medicines, vitamins, and herbal products you take, especially azathioprine, mercaptopurine, warfarin, diuretics, and antibiotics, because some can interact with this medicine. Keep all follow-up appointments and blood tests, even if you feel well, because uric acid, kidney, liver, and blood counts need monitoring. Avoid alcohol, especially beer and spirits, as it can raise uric acid and make gout worse. If you are pregnant, planning pregnancy, or breastfeeding, speak to your doctor before using this medicine. If you develop a rash, fever, mouth sores, or any sign of an allergic reaction, stop the medicine and get medical help right away.
👴 Special Considerations for Elderly
💡 For Patients Above 65
Older adults are more likely to have reduced kidney function, which can raise blood levels of allopurinol and its metabolite. Doctors usually start with a lower dose and increase slowly, with regular checks of kidney function, liver function, and blood counts. Watch for dizziness, falls, or confusion, and report any new symptoms. Good hydration is especially important in this age group.
🤰 Pregnancy Planning (TTC)
If you are planning pregnancy, talk to your doctor before conceiving. Allopurinol is generally avoided in pregnancy unless the benefit clearly outweighs the risk. Your doctor may review your gout treatment and consider alternatives. Do not stop or start any medicine without medical advice if you are trying to conceive.
🏥 Post-Surgery Considerations
Tell your surgeon and anaesthetist that you are taking allopurinol before any operation. In most cases it can be continued, but your doctor will decide based on your kidney function, fluid balance, and the type of surgery. Good hydration after surgery is important to protect the kidneys. If you cannot take oral medicines for a while, your doctor will advise on an alternative plan.
🦷 Dental Procedures
Tell your dentist that you are taking allopurinol before any dental procedure. There is no major interaction with common dental anaesthetics, but it is important for your dental team to know your full medicine list, especially if you take blood thinners such as warfarin. Keep up good oral hygiene, and mention any mouth sores or rashes to your dentist and doctor.
💚 Lifestyle Tips for Better Results
🏋️ Exercise Considerations
Regular exercise is good for gout and overall health, but during an acute gout attack, rest the affected joint and avoid strenuous activity. Stay well hydrated during exercise, especially in hot weather, because dehydration can raise uric acid and increase the risk of kidney stones. If you have joint damage or kidney problems, ask your doctor about the best type and amount of exercise for you.
🥗 Diet Recommendations
💼 Impact on Daily Work & Life
Allopurinol usually does not affect your ability to work or drive. However, if you feel dizzy, tired, or unwell, avoid driving or operating heavy machinery until you feel better. During a gout flare, joint pain and swelling may make it hard to walk or use your hands, so you may need rest or time off work. Most people can continue their normal routine once uric acid is controlled and flares become less frequent.
🛑 When to Stop This Medicine
Do not stop this medicine on your own. Stop immediately and seek medical help if you develop a rash, fever, mouth sores, peeling skin, yellowing of the eyes or skin, dark urine, unusual bleeding, or any sign of a serious allergic reaction. Otherwise, continue the medicine as prescribed, even when you feel well. Your doctor may stop or change it if your uric acid is well controlled for a long time, if you develop significant side effects, or if your kidney or liver function changes.
📅 Long-Term Use Effects
Long-term use of allopurinol is generally safe and effective when monitored properly. It keeps uric acid low, reduces gout attacks, and can shrink tophi over months to years. Regular blood tests are needed to check kidney function, liver function, and blood counts, especially in the first few months and in people with kidney or liver disease. Rare long-term concerns include persistent skin reactions, blood count changes, and liver problems. Do not stop the medicine without medical advice, because uric acid can rise again and attacks may return.
🌿 Non-Medicine Approaches
These can complement medicine but do not replace prescribed treatment.
Another oral xanthine oxidase inhibitor that can be used when allopurinol is not tolerated or not effective.
Evidence: Well-establishedHelp the kidneys remove more uric acid; suitable only for selected patients without uric acid stones or severe kidney disease.
Evidence: ModerateCan help lower uric acid and reduce flares, but often not enough alone for people with frequent gout.
Evidence: ModerateSupports overall gout control and reduces cardiovascular risk.
Evidence: Moderate💉 Vaccination Considerations
💉 If You're Getting Vaccinated
There are no specific vaccine interactions with allopurinol. However, if you are receiving chemotherapy or have a weakened immune system, your doctor will advise on the timing of vaccines. Live vaccines are usually avoided during chemotherapy. Discuss your vaccination schedule with your doctor.
📦 Storage Guide
✅ DO
Store at room temperature between 15°C and 30°C
❌ DON'T
Do not refrigerate unless the label says so
✅ DO
Keep the tablets in the original container with the label
❌ DON'T
Do not transfer them to unmarked containers
✅ DO
Keep away from direct sunlight, heat, and moisture
❌ DON'T
Do not store in the bathroom or near the kitchen stove
✅ DO
Keep out of the reach of children and pets
❌ DON'T
Do not use after the expiry date
✈️ Traveling with This Medicine
Carry this medicine in its original packaging with the prescription label visible, and keep a copy of your prescription or doctor's letter with you, especially for international travel. Pack enough for your whole trip plus a few extra days in case of delays. Store it in your hand luggage at room temperature, away from heat and direct sunlight, and do not leave it in a hot car. If you are crossing time zones, keep taking the tablet at roughly the same interval as at home, or ask your doctor how to adjust. Declare the medicine at customs if required, and check the rules of your destination country before travelling.
💰 Cost Analysis & Savings
👥 Real Patient Stories
Educational, anonymized scenarios. Individual results may vary.
💬 Questions Patients Often Ask
A: Uric acid levels start to fall within one to two weeks, but the full benefit, such as fewer gout attacks and smaller tophi, usually takes several months of consistent treatment.
A: Allopurinol is not used to treat an acute attack. If you are already taking it, do not stop during a flare unless your doctor advises. If you are starting it, your doctor may wait until the attack settles or may start it with anti-inflammatory cover.
A: Limit alcohol, especially beer and spirits, red meat, organ meats, shellfish, and sugary drinks. Drink plenty of water and eat a balanced diet.
A: Weight gain is not a common side effect of allopurinol. If you notice weight changes, discuss it with your doctor.
A: Yes, many people take it for years to keep uric acid low and prevent gout attacks. Regular blood tests are needed to monitor kidney and liver function.
A: Serious side effects include severe skin reactions, liver injury, kidney problems, and blood count changes. Seek urgent care for rash, fever, mouth sores, yellowing of the eyes or skin, or unusual bleeding.
A: It can be used in kidney disease, but the dose usually needs to be lower and kidney function must be monitored regularly.
A: It is best to avoid or limit alcohol, because it raises uric acid and can trigger gout attacks.
A: Uric acid can rise again and gout attacks may return. Do not stop unless your doctor advises it.
A: Stop the medicine and contact your doctor immediately. A rash can sometimes be the first sign of a serious reaction.
🤔 Common Patient Concerns
🔄 Substitutes for alloric 300mg tablet
View AllAlternative brands with exact same active ingredient:
-
ranloric 300mg tabletSun Pharmaceutical Industries Ltd ₹15.42 35.1% CHEAPER
-
uridip 300mg tabletAlchemist Life Science Ltd ₹27.19 14.4% COSTLIER
-
lopnol 300mg tablet dtWest-Coast Pharmaceutical Works Ltd ₹31.43 32.2% COSTLIER
-
allopurizol 300 tabletZeelab Pharmacy Pvt Ltd ₹33.00 38.8% COSTLIER
-
uritas 300mg tabletIntas Pharmaceuticals Ltd ₹37.03 55.8% COSTLIER
Medical Note: Always consult your doctor before switching medications.
🛑 Myths vs. Facts
- Myth: Allopurinol gives immediate relief from gout pain.
Fact: Allopurinol lowers uric acid over weeks and does not relieve an acute attack. It may even trigger a flare when started, so anti-inflammatory cover is often needed. - Myth: You can stop allopurinol once the pain goes away.
Fact: Stopping suddenly can cause uric acid to rise again and lead to more gout attacks. Only stop if your doctor advises it. - Myth: Allopurinol damages the kidneys in everyone.
Fact: Allopurinol is generally safe for the kidneys when used correctly, but dose adjustment and monitoring are needed in people with kidney disease. - Myth: Allopurinol and alcohol can be mixed freely.
Fact: Alcohol, especially beer and spirits, raises uric acid and can trigger gout, so it is best avoided or limited. - Myth: A rash while taking allopurinol is nothing to worry about.
Fact: A rash can be the first sign of a serious reaction. Stop the medicine and contact your doctor promptly.
🔄 Alternative Options
Generic Alternatives
- Allopurinol 100 mg tablet
- Allopurinol 300 mg tablet
Brand Alternatives
- Zyloric 300 mg tablet
- Ciploric 300 mg tablet
- Allopurinol 300 mg tablet (various manufacturers)