Fentanyl is found in more opioid-related overdose deaths than any other opioid.
Note: Cocaine is a stimulant, not an opioid, but is increasingly mixed with fentanyl and found in a greater number of drug deaths in Massachusetts. As such, it is included here alongside the top 3 causes of opioid-related overdose deaths. Other opioids includes painkillers and other natural and semi-synthetic opioids.