Atropine

Antimuscarinic (Anticholinergic)

Drug Class: Antimuscarinic (Anticholinergic)
Mechanism of Action (MOA): Competitively blocks muscarinic acetylcholine receptors → ↑ heart rate, ↓ secretions, bronchodilation.
Clinical Notes: Symptomatic bradycardia and organophosphate/cholinergic poisoning (with pralidoxime). Anticholinergic toxidrome: 'dry as a bone, red as a beet, mad as a hatter, blind as a bat.'
Source: FDA label (DailyMed)