Fentanyl is defined as a highly potent synthetic opioid that is now legal in the U.S. as it has been approved by the Food and Drug Administration (FDA) for pain relief. Boxing legend Mike Tyson made a ...
The boxer said he would "start withdrawing" and "throwing up" once the drug wore off Phillip Faraone/Getty Mike Tyson revealed he used fentanyl "quite a few times" during his boxing career to manage ...