About acetyl salicylic acid
Antiplatelet; nonsteroidal anti-inflammatory drug
Used for
- Prevention of heart attack and stroke in people at increased risk
- Pain and fever relief, though higher doses are usually used
Usual adult dose
For antiplatelet use, commonly 75–100 mg once daily; pain and fever dosing differs.
Common side effects
- Stomach irritation or indigestion
- Bruising or bleeding
- Nausea
- Allergic reactions, including wheezing
Important warnings
- Can cause serious stomach bleeding or ulcers.
- Avoid in children or teenagers with viral illness due to Reye syndrome risk.
- Use caution with asthma, bleeding disorders, or stomach ulcers.
- Not suitable for some people with aspirin allergy or active bleeding.
Pregnancy
Avoid from 20 weeks unless specifically directed; especially avoid after 30 weeks due to fetal risks.
Breastfeeding
Low-dose aspirin may be compatible when prescribed; regular higher doses are generally avoided.
Interactions
- Blood thinners and other antiplatelet medicines increase bleeding risk.
- Ibuprofen and other anti-inflammatory medicines can increase side effects and affect aspirin’s antiplatelet action.
- Methotrexate toxicity risk may increase.
- Alcohol can increase stomach irritation and bleeding risk.
AI-generated from general medical knowledge, not from this product's official leaflet. It may be incomplete or out of date. Not medical advice — ask a pharmacist or doctor before making any decision.