Why is Fentanyl So Dangerous?
Fentanyl belongs to a class of drugs called opioids. Like other opioids, it has a legitimate medical use: easing pain. Opioids work by changing how the body responds to and deals with, pain.
Fentanyl
How Long Does Fentanyl Stay in Your System?
2-4 Hours (half-life) when taken by injection, meaning it takes just a few hours for half of the drug to leave a person’s system.