A deadly new street drug caught the U.S. off guard. Experts say it'll happen again

Public health and law enforcement agencies around the U.S. are scrambling to blunt the impact of xylazine, a deadly new threat to Americans who use street drugs.

That effort is complicated — some critics say crippled — by the fact that no one's sure who's mixing the dangerous chemical into fentanyl, methamphetamines and other street drugs. It's also unclear why they're doing it.

Continue reading at: https://www.npr.org/2023/06/17/1178822364/tranq-xylazine-fentanyl-street-drug-heroin-overdose