Austin EMS Investigates Potential Increase in Narcan-Resistant Overdoses

Austin, TX, September 25, 2026 —

Austin Emergency Medical Services (EMS) has initiated an investigation into a potential rise in opioid overdoses that are proving resistant to Narcan, the common overdose reversal medication.

Officials suggest this concerning trend could be an indicator of a new synthetic opioid, potentially cychlorphine, circulating within the city.

Narcan, also known by its generic name naloxone, is an opioid antagonist that can reverse the effects of an overdose by binding to opioid receptors and blocking the effects of opioids.

However, recent incidents have raised alarms as the medication appears to be less effective in certain overdose cases, prompting the investigation by Austin EMS.

The emergence of novel synthetic opioids, such as cychlorphine, poses a significant public health challenge. These substances can be more potent than traditional opioids and may require higher or repeated doses of naloxone for reversal.

The exact number of suspected Narcan-resistant overdoses or confirmed cases linked to cychlorphine has not been publicly disclosed by Austin EMS at this time.

Authorities are urging residents to be aware of the potential risks associated with illicit drug use and to seek immediate medical attention if an overdose is suspected.

Further details regarding the scope of the investigation and findings are expected as Austin EMS continues to monitor the situation.

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