AdvertisementA deadly new street drug caught the U.S. off guard. Experts say it'll happen againPlay05:47Download AudioJune 17, 2023Brian MannfacebookEmailAmy Treglia shows scarring on her arms caused by xylazine, a veterinary tranquilizer that is being used as a cutting agent for heroin and fentanyl. (The Providence Journal/USA Today Network via Reuters)
