Emergence of N-Propionitrile Chlorphine: A Potent Synthetic Opioid Linked to 41 Deaths in East Tennessee
A potent synthetic opioid known as N-Propionitrile Chlorphine has been linked to at least 41 deaths in East Tennessee. This drug, also called cychlorphine, is believed to be 10 times more powerful than fentanyl. It has been increasingly associated with overdose deaths since mid-2025, with cases reported in multiple states across the country.
The Center for Forensic Science Research and Education reported that N-Propionitrile Chlorphine was found in toxicology reports of individuals who died in eleven Tennessee counties between July 2025 and February 2026. The drug has also been detected in other states such as California, Illinois, Louisiana, Nevada, New York, Pennsylvania, and Texas, as well as in Oklahoma.
Experts are concerned about the rise of this new opioid and its potential impact on the ongoing opioid crisis. Dr. Rachel Wirginis, an addiction medicine and family medicine physician, emphasized the need for quick recognition and intervention to prevent fatal outcomes associated with cychlorphine.
The origin of the drug is believed to be from China before making its way to Europe and eventually reaching the United States. Testing for N-Propionitrile Chlorphine is being conducted in Tennessee, but other states may need to start implementing similar measures to address the growing threat posed by this synthetic opioid.
Despite the dangers posed by this new drug, the medication Naloxone or Narcan can still be effective in reversing opioid overdoses caused by N-Propionitrile Chlorphine. Quick administration of this medication can potentially save lives in cases of overdose involving this potent synthetic opioid.
In conclusion, the emergence of N-Propionitrile Chlorphine as a potent synthetic opioid has raised concerns among experts and authorities due to its association with a significant number of overdose deaths. The need for increased surveillance and testing for this drug is crucial to address the evolving challenges posed by synthetic opioids in the ongoing opioid crisis.