Carfentanil Surge Alarms US Officials

The Drug Enforcement Administration has issued intelligence bulletins showing that carfentanil is being mixed into the illicit drug supply, often without the user's knowledge.

A dose smaller than a poppy seed can be lethal to humans, making it one of the most dangerous substances ever encountered by law enforcement.

The surge in seizures coincides with a broader shift in the synthetic opioid market as traffickers seek more potent and compact chemicals.

Health officials are calling for increased access to high-dose naloxone and more robust chemical fingerprinting to track the drug's origins.