Aspirin
ASA
Pronunciation: AS-pir-in
““Aspirin’ Echo trainer” / “Asa, the Aspirin’ Bear””
Bear for Bayer
Asa for A.S.A. = Acetylsalicylic acid
Echo Trainer for Ecotrin
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.
Available strengths
- tab 81, 325, 500 mg
- cap 81, 325 mg
- DR tab 81, 325 mg
- chew tab 81 mg
- supp 300 mg
Pregnancy Undefined
Lactation Undefined
Cost
| Strength | #/mo | generic $/unit | CostPlus | |
|---|---|---|---|---|
| 81 mg | tab | per unit | $0.01/ea | offered |
| 325 mg | tab | per unit | $0.02/ea | not offered |
| 500 mg | tab | per unit | not offered |
NO BOXED WARNINGS
Principal riskGI bleeding, and Reye syndrome in children
Classes and tags
Clinical profile
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