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Fentanyl is a synthetic opiate analgesic with a rapid onset and short duration of action. It is a strong agonist at the μ-opioid receptors and is historically used to treat breakthrough pain. Fentanyl is approximately 100 times more potent than Morphine, and is commonly used as a patch. Sometimes used as an adulterant for heroin, which has led to many overdose deaths.
Dosage
Insufflated
Common: 25-50ug
Light: 10-25ug
Strong: 50-75ug+
Transdermal
Common: 25-50ug/hr
Light: 12.5ug/hr
Strong: 50-100ug/hr
NOTE: Due to Fentanyl's high potency, it is incredibly difficult to measure safely, and so can easily lead to overdose.
Duration
Onset: undefined minutes
Duration: undefined hours
Effects
Analgesiaeuphoriafeelings of relaxationsedative effectschanges in focusattentionrespiratory depressionnauseaconstipationdry mouthsomnolenceconfusionweaknesssweatingfatiguedizzinessanxiety