AdvertisementOverdose deaths involving street xylazine surged years earlier than reportedJune 30, 2023Brian MannfacebookEmailA nurse treats a man's skin wounds in a community outreach storefront in the Kensington neighborhood of Philadelphia in May. Xylazine, a powerful animal sedative that's moving through the illicit drug supply in the U.S., is causing gruesome skin wounds and scrambling longstanding methods for treating addiction and reversing overdoses. (AP)