Does Fentanyl Last Longer Than Heroin?
Does Fentanyl Last Longer Than Heroin? The effects of fentanyl, like heroin, last much longer than the initial high it produces. The half-life of fentanyl will also heavily depend on the route of administration. Fentanyl is a synthetic (man-made) opioid that is often used in anesthesia and prescribed to treat severe pain. It is a …