About
Aspirin is a medicine used to reduce pain, fever, and inflammation. It belongs to a class of drugs called nonsteroidal anti-inflammatory drugs (NSAIDs) and also acts as an antiplatelet to prevent blood clots.
Aspirin is commonly prescribed for:
- Relieving mild to moderate pain (headache, toothache, muscle pain)
- Reducing fever
- Decreasing inflammation in conditions like arthritis
- Preventing heart attacks and strokes in people at risk
- Reducing risk of blood clot formation after certain surgeries
Aspirin is available in:
- Tablets (e.g., 75 mg, 100 mg, 300 mg, 500 mg)
- Effervescent tablets
- Chewable tablets
- Powder or soluble forms
How and When to Use It
Take aspirin exactly as prescribed by your doctor.
Dosage: The dose depends on your condition — low doses (75–100 mg) are used to prevent blood clots, while higher doses (300–500 mg) are for pain or inflammation.
Take tablets with a full glass of water. If upset stomach occurs, take with food or milk.
Do not crush or chew enteric-coated tablets unless directed.
Do not stop taking aspirin suddenly if it was prescribed for heart or blood vessel protection without consulting your doctor.
Contraindications
Do not take aspirin if you have:
- Allergy to aspirin or other NSAIDs
- Active bleeding or bleeding disorders
- Peptic ulcers or severe stomach problems
- Asthma triggered by NSAIDs
- Severe liver or kidney disease
Side Effects
Like all medicines, aspirin can cause side effects, although not everyone experiences them.
Common side effects:
- Stomach upset or heartburn
- Nausea or vomiting
- Easy bruising
- Minor bleeding (nosebleeds, gums)
Serious side effects — seek medical attention immediately:
- Severe or prolonged bleeding
- Black or bloody stools
- Severe stomach pain
- Allergic reactions (rash, swelling, difficulty breathing)
Contact your doctor before surgery or dental procedures, as aspirin can increase bleeding risk.
Pregnancy, Breastfeeding & Fertility
Low-dose aspirin is sometimes prescribed during pregnancy for specific conditions, but higher doses should be avoided.
Aspirin is not usually recommended while breastfeeding in high doses; low-dose use may be discussed with your doctor.
Aspirin does not usually affect fertility in men or women.
Interactions With Other Medications
Some medicines can increase the risk of bleeding or affect how aspirin works. Inform your doctor if you take:
- Other NSAIDs (e.g., ibuprofen, naproxen)
- Anticoagulants (e.g., warfarin, apixaban)
- Antiplatelet drugs (e.g., clopidogrel)
- Certain corticosteroids
- Herbal supplements like ginkgo or garlic
Frequently Asked Questions
What should I do if I miss a dose?
Take it as soon as you remember. If it is almost time for your next dose, skip the missed one — do not double up.
Can I drink alcohol while taking aspirin?
Alcohol can increase the risk of stomach bleeding. Limit alcohol or avoid it while taking aspirin.
Do I need regular blood tests?
Routine blood tests are not usually needed for low-dose aspirin, but your doctor may monitor you if you are on other blood-thinning medications.
Is aspirin better than other painkillers?
Aspirin has unique blood-thinning effects. For pain relief alone, other NSAIDs or paracetamol may be alternatives. Your doctor will advise based on your needs.
How long will I need to take aspirin?
For heart or stroke prevention, low-dose aspirin may be taken long-term. For pain or inflammation, use as directed by your doctor.
Can I take other painkillers with aspirin?
Some NSAIDs can increase bleeding risk. Paracetamol is usually safer, but always check with your doctor.
What should I do before surgery or dental work?
Inform your doctor or dentist that you take aspirin. They may advise temporarily stopping it to reduce bleeding risk.
Medical Disclaimer: This information is provided for educational purposes only and is not intended to replace professional medical advice, diagnosis, or treatment. Always consult a healthcare professional before starting, stopping, or changing any medication.
Last reviewed: June 2026
