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Nalmefene hydrochloride

Published by U.S. Food and Drug Administration | U.S. Department of Health & Human Services | Metadata Last Checked: February 18, 2026 | Last Modified: 2025-03-17
Zurnai is a prescription medication containing nalmafene hydrochloride, an opioid antagonist used to reverse opioid overdose effects. It's administered as an injection via autoinjector into the muscle or under the skin, with each dose providing 1.5 mg in 0.5 mL. Manufactured by Purdue Pharma L.P., it's approved for emergency use. This information was generated using AI and is provided for informational and research purposes only.

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