Atropine

Antimuscarinic (Anticholinergic)

Drug Class: Antimuscarinic (Anticholinergic)
Mechanism of Action (MOA): Competitively blocks muscarinic acetylcholine receptors → ↑ heart rate, ↓ secretions, bronchodilation.
Clinical Notes: Antivagal use and bradyasystolic arrest; organophosphate or muscarinic mushroom poisoning (with pralidoxime). Anticholinergic toxidrome: 'dry as a bone, red as a beet, mad as a hatter, blind as a bat.'
Source: FDA label

Sources

Reviewed September 2026

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