Atlas Three · Medicine Atlas · 01-modern

Aspirin

Aspirin (acetylsalicylic acid, ASA) — irreversible COX-1/COX-2 inhibitor. At 75–325 mg, irreversibly acetylates platelet COX-1, blocking TXA₂ for platelet lifetime (~10 days) → antiplatelet effect. Cornerstone of acute MI/stroke; secondary prevention reduces CV events ~25%.

Also known as: aspirin, acetylsalicylic acid, ASA, salicylate

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2026-06-03Last Reviewed
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aspirin

Aspirin

Aspirin (acetylsalicylic acid, ASA) — irreversible COX-1/COX-2 inhibitor. At 75–325 mg, irreversibly acetylates platelet COX-1, blocking TXA₂ for platelet lifetime (~10 days) → antiplatelet effect. Cornerstone of acute MI/stroke; secondary prevention reduces CV events ~25%.