- Pilocarpine is a naturally occurring alkaloid and cholinergic parasympathomimetic agent that acts primarily as a muscarinic receptor agonist.
- It mimics the action of acetylcholine on muscarinic receptors, especially M3 receptors, stimulating smooth muscle contraction, glandular secretion, and pupil constriction.
Chemical Formula:
- C₁₁H₁₆N₂O₂
Mechanism of Action:
- Muscarinic agonist, especially M3
- Stimulates secretions and ciliary muscle contraction
Uses of Pilocarpine:
- Glaucoma (open-angle and angle-closure)
- Xerostomia (dry mouth in Sjögren’s or post-radiation)
Side Effects of Pilocarpine:
- Sweating
- Lacrimation
- Bradycardia
- Diarrhea
- Nausea
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