Another powerful animal tranquilizer has made its way into street drugs, added to illicit fentanyl and other opioids to prolong a user’s high. The drug, called medetomidine, is linked to a recent ...

A powerful veterinary tranquilizer showing up in the street drug supply is putting new pressure on hospitals and treatment centers in Western Pennsylvania, according to local doctors and providers.

The animal tranquilizers xylazine and medetomidine are in approximately one-third of the illegal opioids available in the U.S., including fentanyl, heroin and oxycodone. Animal tranquilizers enhance ...