logo

Video encyclopedia

Fentanyl

3:45

Your Brain On Fentanyl (FIXED)

1:33

Fentanyl Decontamination | FAST-ACT Decontamination Solutions

2:51

What's Really in Your Weed?

1:37

Morphine Structure Activity Relationship

2:19

US hails UN plan to monitor fentanyl market

Fentanyl, also spelled fentanil, is an opioid used as a pain medication and together with other medications for anesthesia. Fentanyl is also used as a recreational drug, often mixed with heroin or cocaine. It has a rapid onset and effects generally last less than two hours. Medically, fentanyl is used by injection, as a patch on the skin, as a nasal spray, or in the mouth.