FENTANYL is a pain reliever. It is used to treat persistent, moderate to severe chronic pain.
Fentanyl is the generic form of the brand-name drug Duragesic, a prescription opioid (narcotic) drug used to treat chronic, “around-the-clock” pain.

It should be used only by people who are “opioid-tolerant,” or who are already taking opioid pain medications, such as morphine and oxycodone, regularly.

Fentanyl is in a class of drugs called opioid analgesics, which work by binding to nervous system proteins called opioid receptors, thereby blocking the transmission of pain signals to the brain.

Duragesic is a transdermal (through the skin) patch.

Fentanyl is also sold as a lozenge under the brand name Actiq, a tablet that goes under the tongue (Abstral), a film that’s applied to the inner lining of the cheek or lip (Onsolis), a tablet that goes between the gum and cheek (Fentora) a nasal spray (Lazanda), a sublingual tablet (Abstral), and a sublingual spray (Subsys). Benzodiazepines. painkiller, anxiety.