The amount of fentanyl some people are consuming might seem shocking, as just one pill with over 2 milligrams of the drug can be deadly. However, staff at treatment centers in Sonora, Mexico, and Arizona say it's now common for users to take such high doses.
Kevin González, a former fentanyl user, said he hadn't seen anyone overdose in years or heard of friends experiencing one. González had used fentanyl and other opioids for over a decade in Phoenix, Arizona, before checking himself into an addiction treatment center in Sonora.
