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Scopolamine and its toxicity / overdose

1 Views • 08/26/25
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Side Effects
Side Effects
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- Class: Muscarinic antagonist (anticholinergic)
- Common uses: PONV prevention, Motion sickness prevention
- Mechanism: Inhibits M1 muscarinic receptors in medulla's vomiting center

Side Effects
1. Common side effects: Xerostomia (dry mouth), Mydriasis, Blurred vision, Drowsiness
2. Anticholinergic syndrome symptoms: Flushed skin, Tachycardia, Hyperthermia, Confusion, Agitation

Special Considerations
1. Elderly patients:
- Decreased acetylcholine-induced CNS transmission
- Increased blood-brain barrier permeability
- Higher risk of central effects
2. Drug interactions:
- Increased risk with other anticholinergics (e.g., oxybutynin, benztropine)

Management of Overdose
Primary steps:
- Remove patches
- Provide supportive care
- Administer physostigmine for severe symptoms (Crosses BBB to treat both central and peripheral symptoms, vs neostigmine)

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