aspirin 300mg tablet - Aspirin (300mg) medicine

Aspirin 300mg Tablet: Complete Guide to Uses, Side Effects, and Safety

No reviews yet
🏭 Bini Laboratories Pvt Ltd 📦 Varies by brand 💊 Allopathy 📅 Updated: Sep 25, 2026
⚠️ Nephrotoxicity Risk 📋 Prescription Required 💊 Generic Available
Medically Reviewed
11 min read
Evidence: Well-established for pain, fever, and inflammation.
Reviewed by
SaathiMed Expert Panel | Sep 25, 2026

When to Call Your Doctor IMMEDIATELY

  • Blood in stool or vomit that looks like coffee grounds
  • Severe abdominal pain or persistent stomach upset
  • Chest pain or difficulty breathing
  • Severe headache with visual changes
  • Sudden swelling of face, lips, or throat
  • Yellowing of skin or eyes
  • Decreased urine output or swelling in legs
  • Ringing in the ears or hearing loss

If experiencing severe symptoms, call emergency services immediately.

What is aspirin 300mg tablet used for?

Aspirin 300 mg is an immediate-release tablet used for short-term relief of pain, fever, and inflammation. It works by blocking pain-causing chemicals and thinning the blood. It is not suitable for children under 16 or people with bleeding disorders.

  • Generic Name: Aspirin
  • Manufacturer: Bini Laboratories Pvt Ltd
  • Form: Allopathy
  • Pregnancy Category: Consult doctor
  • Prescription Required: Yes

🇮🇳 aspirin 300mg tablet के बारे में (Hindi Summary)

उपयोग: यह दवा एस्पिरिन 300 मिलीग्राम की गोली है, जिसका उपयोग हल्के से मध्यम दर्द, बुखार और सूजन को कम करने के लिए किया जाता है। यह सिरदर्द, दांत दर्द, मांसपेशियों के दर्द, मासिक धर्म के दर्द और जोड़ों के दर्द में राहत देती है। यह खून को पतला करने का भी काम करती है, इसलिए दिल के दौरे और स्ट्रोक को रोकने के लिए कम मात्रा में इसका उपयोग किया जाता है। यह दवा 16 साल से कम उम्र के बच्चों को नहीं दी जानी चाहिए क्योंकि इससे रेये सिंड्रोम का खतरा होता है।

साइड इफेक्ट्स: आम दुष्प्रभावों में पेट में जलन, गैस, मतली और हल्का सिरदर्द शामिल हैं। गंभीर दुष्प्रभावों में पेट से खून बहना, एलर्जी और कान में घंटी बजना शामिल है। अगर आपको काला मल, खून की उल्टी, या पेट में तेज दर्द हो, तो तुरंत डॉक्टर से मिलें।

सुरक्षा सलाह: इस दवा को हमेशा भोजन या दूध के साथ लें ताकि पेट में जलन न हो। खाली पेट न लें। इस दवा के साथ शराब न पिएं क्योंकि इससे पेट में खून बहने का खतरा बढ़ जाता है। बिना डॉक्टर की सलाह के कोई अन्य दर्द निवारक दवा न लें। अगर आपको सर्जरी या दांत का इलाज कराना है, तो डॉक्टर को बताएं कि आप यह दवा ले रहे हैं।

💡 Did You Know? The first generic medicine was introduced in India in 1970 after the Patents Act was amended.

💊 aspirin 300mg tablet Uses & Benefits

[{"condition":"Mild to moderate pain","description":"Relieves headache, toothache, muscle ache, and menstrual cramps.","evidence":"Well-established"},{"condition":"Fever","description":"Reduces elevated body temperature.","evidence":"Well-established"},{"condition":"Inflammation","description":"Reduces swelling and inflammation in conditions like arthritis.","evidence":"Well-established"},{"condition":"Acute coronary syndrome","description":"Used in emergency settings to prevent further clot formation during a heart attack.","evidence":"Well-established"}]

Off-label uses: [{"condition":"Prevention of pre-eclampsia","description":"Low-dose aspirin may be prescribed off-label in some high-risk pregnancies under specialist care.","evidence":"Emerging"},{"condition":"Colorectal cancer prevention","description":"Long-term low-dose aspirin may reduce risk, but this is not a standard indication for the 300 mg strength.","evidence":"Limited"}]

Primary treatment for: Pain and fever

Also treats: Inflammation, Acute coronary syndrome

📋 Drug Information

Generic Name(s)Aspirin
Brand NameAspirin 300mg Tablet
ManufacturerBini Laboratories Pvt Ltd
Packaging / FormVaries by brand (Allopathy)
Therapeutic ClassBLOOD RELATED
Action ClassNSAID's- Non-Selective COX 1&2 Inhibitors (Salicylates)
Route of AdministrationOral
StorageStore at room temperature between 15°C and 30°C (59°F to 86°F). Keep in a dry place, away from direct sunlight and moisture. Do not store in the bathroom.
Shelf LifeTypically 24 to 36 months from the date of manufacture. Check the expiry date on the packaging before use.
WHO GuidelineNot established from the available information.
ICMR GuidelineNot established from the available information.

👨‍⚕️ Doctor's Practical Tips

Evidence-based practical advice from experienced clinicians

1
Always take this medicine with food or milk to reduce stomach irritation.
2
Do not exceed the recommended dose; high doses can cause serious side effects.
3
Avoid alcohol completely while taking this medicine to prevent stomach bleeding.
4
If you are on blood thinners, inform your doctor before taking this medicine.
5
Do not give this medicine to children under 16 years due to the risk of Reye's syndrome.
6
Report any unusual bleeding, bruising, or black stools to your doctor immediately.
7
If you are scheduled for surgery, stop this medicine as advised by your doctor.

🔍 Is This Medicine Right for Your Symptom?

Educational reference. Always consult a doctor for diagnosis.

✅
Headache
This medicine is commonly used for headache relief.
Likely Use
✅
Fever
This medicine helps reduce fever.
Likely Use
✅
Joint pain
This medicine reduces pain and inflammation in joints.
Likely Use
✅
Chest pain
In case of suspected heart attack, this medicine may be used under medical guidance.
Likely Use
❌
Common cold
This medicine does not treat the underlying cold virus but may relieve associated aches and fever.
Not Primary

🔬 How This Medicine Works (Pharmacology)

Pharmacokinetics

AbsorptionAspirin is rapidly absorbed from the stomach and upper small intestine. The 300 mg immediate-release tablet is designed to dissolve quickly, allowing absorption to begin within 30 minutes.
DistributionAspirin is widely distributed throughout body tissues. It crosses the placenta and is excreted in breast milk. It is also distributed into synovial fluid.
Protein BindingAspirin is about 80 to 90 percent bound to plasma proteins, mainly albumin. Its active metabolite, salicylate, is also highly protein-bound.
MetabolismAspirin is rapidly hydrolyzed to salicylic acid in the liver, intestines, and blood. Salicylic acid is further metabolized in the liver by conjugation with glycine and glucuronic acid. The metabolism of salicylate can become saturated at high doses, leading to zero-order kinetics.
Half-LifeThe half-life of aspirin is about 15 to 20 minutes. However, the active metabolite salicylate has a half-life of 2 to 3 hours at low doses, which can increase to 15 to 30 hours at high doses due to saturation of metabolic pathways.
ExcretionSalicylate and its metabolites are excreted primarily by the kidneys. Urinary excretion is increased by alkalinization of urine.
BioavailabilityAbout 50 to 75 percent of an oral dose reaches the systemic circulation unchanged as aspirin, but this can vary. The bioavailability of total salicylate is close to 100 percent.
Onset of ActionPain relief begins within 30 minutes. Anti-inflammatory effects may take several days of regular dosing to become noticeable. Antiplatelet effect starts within 1 hour.
Peak Plasma TimePeak plasma concentration of aspirin occurs about 1 to 2 hours after oral administration. For salicylate, peak levels are reached in 1 to 2 hours for immediate-release formulations.
Duration of ActionPain relief and fever reduction last about 4 to 6 hours. The antiplatelet effect lasts for the lifespan of the platelet, approximately 7 to 10 days.

How It Works

This medicine works by irreversibly inhibiting the cyclo-oxygenase (COX) enzymes, COX-1 and COX-2. This blocks the conversion of arachidonic acid into prostaglandins and thromboxane A2. Prostaglandins are responsible for pain, fever, and inflammation, while thromboxane A2 promotes platelet clumping. By reducing these substances, this medicine provides pain relief, fever reduction, anti-inflammatory effects, and blood-thinning action.

Mechanism Steps

1
Binding to COX enzymes: This medicine binds irreversibly to the active site of cyclo-oxygenase enzymes.
2
Blocking prostaglandin synthesis: This prevents the conversion of arachidonic acid into prostaglandin H2, a precursor for other prostaglandins and thromboxane A2.
3
Reduced pain and fever: Lower prostaglandin levels reduce pain perception and reset the body's temperature set point.
4
Reduced inflammation: Decreased prostaglandins also lessen swelling and redness in inflamed tissues.
5
Inhibition of platelet aggregation: By blocking thromboxane A2 production in platelets, this medicine prevents them from clumping together, reducing the risk of blood clots.

💡 How to Take aspirin 300mg tablet

Strength: Aspirin 300 mg immediate-release tablet

1Take this medicine by mouth with a full glass of water.
2Take it with food or milk to reduce stomach upset.
3Swallow the tablet whole. Do not crush or chew unless instructed for a heart attack.
4Follow the dose and duration prescribed by your doctor.
5Do not lie down immediately after taking the tablet.

Dosage Information

Adult DosageFor pain or fever, the usual adult dose is 300 mg to 600 mg every 4 to 6 hours as needed, not to exceed 4 grams (4000 mg) per day. For suspected heart attack, a single 300 mg tablet is chewed immediately under medical guidance. Dose must be individualized by a qualified clinician based on indication, age, weight, renal and hepatic function.
Pediatric DosagePediatric dosing is not established from available information. Consult a pediatrician. Aspirin is generally contraindicated in children under 16 years due to the risk of Reye's syndrome.
Elderly DosageElderly patients may be more sensitive to the effects of aspirin, especially gastrointestinal bleeding and kidney effects. Use the lowest effective dose and monitor closely. Dose must be individualized by a qualified clinician.
Renal ImpairmentUse with caution in patients with kidney impairment. Dose reduction may be necessary. Consult a doctor for individualized dosing.
Hepatic ImpairmentUse with caution in patients with liver impairment. Dose reduction may be necessary. Consult a doctor for individualized dosing.
Maximum Daily Dose4000 mg per day for adults. Do not exceed this dose without medical supervision.

Dosage Timeline

🌅 Morning ❌ ☀️ Afternoon ❌ 🌆 Evening ❌ 🌙 Night ❌

🍽️ Food Timing Guide

With food
Take with meals or a glass of milk
Reduces stomach upset and irritation.
Grapefruit
No significant interaction
Grapefruit does not significantly affect aspirin metabolism.
Caffeine
May enhance pain relief
Caffeine can increase the analgesic effect of aspirin.

⏰ What to Do If You Miss a Dose

📌 Less than half the dosing interval has passed
→ Take the missed dose as soon as you remember.
💡 Continue with the regular schedule.
📌 More than half the dosing interval has passed
→ Skip the missed dose.
💡 Do not double dose to catch up.

⚠️ Side Effects of aspirin 300mg tablet

✅ Common Side Effects

Stomach irritation (Common (up to 10%))
Take with food or milk. If it persists, consult your doctor.
Heartburn (Common (5-10%))
Take with a full glass of water and avoid lying down immediately after taking.
Nausea (Common (5-10%))
Take with a light snack. If nausea continues, talk to your doctor.
Headache (Uncommon (1-5%))
Usually resolves on its own. If severe or persistent, seek medical advice.

🚨 Serious Side Effects

Gastrointestinal bleeding (Rare (<0.1%))
Seek immediate medical attention if you notice black or bloody stools, vomiting blood, or severe abdominal pain.
Allergic reaction (Rare (<0.1%))
Stop the medicine and get emergency help if you experience rash, swelling of face or throat, or difficulty breathing.
Kidney problems (Rare (<0.1%))
Report decreased urine output or swelling in legs to your doctor promptly.
Severe skin reactions (Very rare (<0.01%))
Seek immediate medical care if you develop a rash with blisters or peeling skin.

⚠️ Rare Side Effects

Reye's syndrome
This occurs in children recovering from viral infections. Never give aspirin to children under 16. Seek emergency care if a child develops vomiting, confusion, or seizures.
Tinnitus (ringing in ears)
This may indicate high blood levels. Consult your doctor if you experience persistent ringing in the ears.

Consult your doctor if you experience any unusual symptoms.

🔬 Drug Interactions

Drug Severity Effect
Warfarin Major
Methotrexate Major
Ibuprofen Major
Other NSAIDs Major
ACE inhibitors Moderate
Diuretics Moderate
Corticosteroids Moderate
Antacids Minor
Alcohol Moderate
Grapefruit Minor

🚨 Major Interactions

  • Warfarin
  • Methotrexate
  • Ibuprofen
  • Other NSAIDs

⚡ Moderate Interactions

  • ACE inhibitors
  • Diuretics
  • Corticosteroids

🍷 Alcohol Interaction

Avoid alcohol while taking this medicine. Alcohol increases the risk of gastrointestinal bleeding and can worsen stomach irritation.

🔎 Check Your Other Medicines

Educational tool. Always confirm with your doctor or pharmacist.

🛡️ Safety & Warnings

🚫 Contraindications

["Known allergy to aspirin or other NSAIDs","Active peptic ulcer or gastrointestinal bleeding","History of asthma induced by aspirin or NSAIDs","Severe kidney or liver disease","Bleeding disorders (e.g., hemophilia)","Children under 16 years (risk of Reye's syndrome)","Third trimester of pregnancy","Concurrent use with anticoagulants (unless specifically prescribed)"]

⚠️ Warnings & Precautions

["Do not use for pain for more than 10 days or fever for more than 3 days without medical advice.","Avoid in patients with dehydration or low blood volume.","Use with caution in the elderly due to increased risk of bleeding.","May cause stomach bleeding, especially with alcohol or other NSAIDs.","Do not crush or chew enteric-coated tablets; swallow whole.","Inform your doctor if you are scheduled for surgery or dental procedures.","Stop use and consult a doctor if you experience ringing in the ears or hearing loss."]

🤱 Lactation Safety

Aspirin is excreted in breast milk. Short-term use of low doses is generally considered compatible with breastfeeding, but high doses or prolonged use should be avoided. Consult your doctor before use.

💊 Overdose Management

Overdose of aspirin can cause serious symptoms such as rapid breathing, ringing in the ears, nausea, vomiting, confusion, and even coma. If you suspect an overdose, seek emergency medical help immediately. Treatment may include activated charcoal, intravenous fluids, and sodium bicarbonate to alkalinize urine. Do not induce vomiting unless instructed by a healthcare professional.

⏰ Missed Dose

If you miss a dose, take it as soon as you remember. If it is almost time for your next dose, skip the missed dose and continue with your regular schedule. Do not take a double dose to make up for a missed one.

Additional Safety Advice

General Safety

Take this medicine with food or a glass of milk to reduce stomach upset. Do not take it on an empty stomach. Avoid alcohol while taking this medicine because it increases the risk of stomach bleeding. Do not take other pain relievers or blood thinners without consulting your doctor. If you are scheduled for surgery or dental work, inform your doctor that you are taking this medicine. Do not use this medicine for more than a few days for pain or fever without medical advice. Keep out of reach of children.

👴 Special Considerations for Elderly

💡 For Patients Above 65

Elderly patients are at higher risk of gastrointestinal bleeding, kidney problems, and drug interactions. Use the lowest effective dose and monitor closely. Consult your doctor regularly.

🤰 Pregnancy Planning (TTC)

If you are planning to become pregnant, consult your doctor before taking this medicine. Aspirin may affect ovulation and is generally avoided during pregnancy, especially in the third trimester.

🏥 Post-Surgery Considerations

Do not take this medicine after surgery unless specifically prescribed by your surgeon, as it can increase the risk of bleeding. Inform your surgeon if you are taking this medicine before any surgical procedure.

🦷 Dental Procedures

Inform your dentist that you are taking this medicine before any dental procedure, as it can increase the risk of bleeding. Your dentist may advise you to stop it temporarily.

💚 Lifestyle Tips for Better Results

🏃
Maintain a healthy weight to reduce stress on joints.
🥗
Engage in regular low-impact exercise like walking or swimming.
😴
Practice good posture to prevent muscle strain.
💧
Include anti-inflammatory foods like fruits, vegetables, and omega-3 rich fish in your diet.
🧘
Get adequate sleep to help your body recover.
🌞
Manage stress through relaxation techniques like deep breathing or meditation.

🏋️ Exercise Considerations

While taking this medicine, you can exercise as usual, but avoid activities that may cause injury or bleeding. If you experience dizziness or unusual tiredness, avoid strenuous exercise and consult your doctor.

🥗 Diet Recommendations

Include omega-3 rich foods like flaxseeds, walnuts, and fatty fish.
Reduce intake of processed and fried foods.
Stay well hydrated by drinking plenty of water.
Limit alcohol consumption as it increases bleeding risk.

💼 Impact on Daily Work & Life

This medicine generally does not affect your ability to drive or operate machinery. However, if you experience dizziness or drowsiness, avoid these activities until you feel better.

🛑 When to Stop This Medicine

Stop taking this medicine and consult your doctor if you experience severe stomach pain, black stools, vomiting blood, signs of allergic reaction, or ringing in the ears. Do not stop long-term therapy without consulting your doctor.

📅 Long-Term Use Effects

Long-term use of this medicine can increase the risk of gastrointestinal bleeding, kidney problems, and liver damage. Regular monitoring of kidney and liver function, as well as signs of bleeding, is recommended. It may also cause iron deficiency anemia due to chronic blood loss. Consult your doctor for regular check-ups if you are on long-term therapy.

🌿 Non-Medicine Approaches

These can complement medicine but do not replace prescribed treatment.

Physical therapy

Can help manage chronic pain and improve mobility.

Evidence: Well-established
Heat and cold therapy

Applying heat or cold packs can relieve localized pain and inflammation.

Evidence: Well-established
Acupuncture

May provide pain relief for some individuals.

Evidence: Emerging

💉 Vaccination Considerations

💉 If You're Getting Vaccinated

This medicine does not interact with vaccines. However, if you are scheduled for a vaccination, inform your healthcare provider that you are taking this medicine, especially if you have a bleeding disorder.

📦 Storage Guide

✅ DO

Store at room temperature (15-30°C)

❌ DON'T

Do not refrigerate unless specified

✅ DO

Keep in original container

❌ DON'T

Do not transfer to unmarked containers

✅ DO

Keep away from direct sunlight

❌ DON'T

Do not store in bathroom cabinet

✈️ Traveling with This Medicine

When traveling, carry this medicine in its original packaging with a copy of your prescription. Store it in a cool, dry place away from direct sunlight. If you are crossing time zones, continue taking your doses as prescribed, but consult your doctor for specific advice if you are on a strict schedule. Check customs regulations for carrying medicines in your destination country.

💰 Cost Analysis & Savings

👥 Real Patient Stories

Educational, anonymized scenarios. Individual results may vary.

👤 A 45-year-old office worker with chronic knee pain
Ramesh, a 45-year-old office worker, had been suffering from knee pain for months. His doctor prescribed this medicine for short-term pain relief. He started taking it with food as advised. Within a week, his pain reduced significantly, and he was able to walk more comfortably. He made sure not to take it on an empty stomach and avoided alcohol.
💡 Lesson: Taking this medicine with food improves tolerability and reduces stomach upset. Always follow the prescribed dose and duration.
👤 A 60-year-old man with a history of heart attack
Suresh, a 60-year-old man, had a mild heart attack last year. His doctor prescribed a low-dose aspirin daily to prevent another attack. He was also given this 300 mg strength for emergency use if he experiences chest pain. He keeps a tablet with him at all times and knows to chew it immediately if he suspects a heart attack.
💡 Lesson: Aspirin can be life-saving during a heart attack. Always carry your emergency medicine and know how to use it as instructed by your doctor.

💬 Questions Patients Often Ask

Q: How long does it take to work?

A: This medicine starts relieving pain within 30 minutes, with peak effects in 1 to 2 hours.

Q: Can I take it on an empty stomach?

A: No, it is best taken with food or milk to reduce stomach irritation.

Q: Is it safe for children?

A: No, it is not safe for children under 16 years due to the risk of Reye's syndrome.

Q: Can I take it with other painkillers?

A: Do not take it with other NSAIDs without consulting your doctor, as it increases the risk of side effects.

🤔 Common Patient Concerns

💭 These are the concerns patients most commonly raise

  • Can I take this medicine long-term?
  • Will it affect my kidney function?
  • Can I drive after taking this medicine?
  • Does it interact with my blood pressure medicine?
  • What if I miss a dose?
  • Can I drink alcohol while taking this?

🔄 Substitutes for aspirin 300mg tablet

View All

Alternative brands with exact same active ingredient:

Medical Note: Always consult your doctor before switching medications.

🛑 Myths vs. Facts

  • Myth: Aspirin is safe for everyone.
    Fact: Aspirin can cause serious side effects like stomach bleeding and is not safe for children under 16 or people with certain conditions.
  • Myth: Aspirin can be taken on an empty stomach.
    Fact: Aspirin should be taken with food or milk to reduce stomach irritation.
  • Myth: Aspirin is a good choice for fever in children.
    Fact: Aspirin should never be given to children under 16 due to the risk of Reye's syndrome.

🔄 Alternative Options

Generic Alternatives

  • Aspirin 300 mg tablet (various manufacturers)

Brand Alternatives

  • Disprin
  • Ecosprin
  • Aspirin 300 mg (various brands)

📊 Comparison with Similar Medicines

[{"medicine":"Aspirin 300 mg","class":"NSAID / Antiplatelet","main_use":"Pain, fever, inflammation, heart attack prevention","common_side_effects":"Stomach irritation, bleeding risk"},{"medicine":"Ibuprofen 400 mg","class":"NSAID","main_use":"Pain, fever, inflammation","common_side_effects":"Stomach upset, dizziness"},{"medicine":"Paracetamol 500 mg","class":"Analgesic / Antipyretic","main_use":"Pain, fever","common_side_effects":"Generally well tolerated; liver toxicity in overdose"}]

😊 Was this information helpful?

Browse Medicines A-Z

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Back to Medicines Directory