Fort Smith police warn carfentanil seizure raises overdose risk; naloxone may be less effective

FORT SMITH — Fort Smith police announced what they described as the department’s first seizure of carfentanil, a synthetic opioid developed as an animal tranquilizer and never approved for human use. Officials warned that carfentanil is far more potent than fentanyl and that naloxone (Narcan) "may not be effective" in reversing an overdose involving the drug.

Anchors summarized police warnings that dealers are using apps such as Snapchat to communicate because of perceived privacy features. The segment emphasized that carfentanil is extraordinarily dangerous and that standard overdose responses may not suffice.

The broadcast did not include detailed forensic results or the amount seized; Fort Smith police provided the seizure notice and the public-health warning for viewers.