Mix of Vet Tranquilizer, Fentanyl an 'Emerging Threat,' U.S. Officials Warn

WEDNESDAY, April 12, 2023 -- U.S. officials are intensifying efforts to crack down on illicit use of the veterinary tranquilizer xylazine, which can cause painful and deadly side effects in humans.

The drug, when mixed with the opioid fentanyl, has...