Aspirin
ASA
What it isIrreversible COX-1 and COX-2 inhibitor; secondary cardiovascular prevention, acute coronary syndrome and stroke.
Why this oneIts irreversible platelet effect persists for each platelet's lifespan, distinguishing it from other NSAIDs.
What limits itGI bleeding limits use; primary prevention rarely justifies it. Avoid in viral illness in children; ibuprofen taken first blunts platelet effect.
FDA-approved for
- pain/fever (~1899)
- antiplatelet (~1985)
FDA label
Read the full label on DailyMed ↗
| FDA dosing | Population | Start | Target | Max |
|---|---|---|---|---|
| Not stated in fetched sections (OTC analgesic/antipyretic label — Uses/Purpose section absent) | Adults & children ≥12 yr | 4 tablets q4h PRN | 4–8 tablets q4h PRN while symptoms last | 48 tablets/24 h |
Renal Undefined
Hepatic Undefined
Dose expressed in tablets only — tablet strength (mg) is not stated in any fetched section.
Instructions
- Drink a full glass of water with each dose.
- Children <12 yr: ask a doctor (no OTC dose given).
- Do not exceed 48 tablets in 24 h unless directed by a doctor.
Pregnancy Undefined
Lactation Undefined
NO BOXED WARNINGS
Principal riskGI bleeding, and Reye syndrome in children
Classes and tags
Clinical profile
Mechanism of action: Aspirin ballicule
Open Aspirin in the interactive console ↗
Memory aids: mascots and interaction avatars
Bear for Bayer
Asa for A.S.A. = Acetylsalicylic acid
Echo Trainer for Ecotrin
