AdvertisementFentanyl-Linked Deaths: The U.S. Opioid Epidemic's Third Wave BeginsMarch 21, 2019Martha BebingerfacebookEmailAuthorities intercepted a woman using this drug kit in preparation for shooting up a mix of heroin and fentanyl inside a Walmart bathroom last month in Manchester, N.H. Fentanyl offers a particularly potent high but also can shut down breathing in under a minute. (Washington Post/Getty Images)