- Drug Class
- Opioid Antagonist
- Mechanism of Action (MOA)
- Competitive µ-opioid receptor antagonist → reverses opioid effects.
- Clinical Notes
- Opioid overdose reversal (intranasal/IM/IV). Short half-life — may need repeat dosing; can precipitate acute withdrawal. Take-home kits save lives.
Sources
Reviewed June 2026- FDA label — FDA / DailyMed
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