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Story summary
- N-Propionitrile Chlorphine (cychlorphine) has been linked to 41 deaths in East Tennessee from July 2025 to February 2026.
- Authorities believe it originated in China and reached the United States in late 2024.
- The drug is ten times more potent than fentanyl and is difficult to detect with standard toxicology tests.
- Naloxone can still reverse overdoses if administered quickly.
- Monitoring efforts are underway to assess its prevalence and impact.
