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For educational use only. Content is AI-generated, may contain errors, and is not medical advice — always verify against current primary sources and faculty guidance before clinical use.

HomePharmacologyAcetaminophen

Acetaminophen

Analgesic / Antipyretic
Drug Class
Analgesic / Antipyretic
Mechanism of Action (MOA)
Centrally acting; weak central COX inhibition (mechanism incompletely understood) with minimal peripheral anti-inflammatory effect.
Clinical Notes
First-line analgesic/antipyretic; preferred analgesic in pregnancy; safe in PUD. Hepatotoxic in overdose (max 4 g/day from all sources) — antidote N-acetylcysteine.
Source
FDA label

Sources

Reviewed September 2026
  1. FDA label — FDA / DailyMed

Checked against the guideline or standard reference the exam keys to. If it has moved, use Report an error below.

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