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    Disclaimer
    ☠ This is a fentanyl analogue active in microgram doses. Accidental overdose can be rapidly fatal. Naloxone should always be on hand.
    🧪 This is a research chemical with limited data on its long-term health effects, toxicity profile, and safe dosage ranges.

    Acetylfentanyl

    Aliases: A-f, Desmethyl fentanyl, Wrongly called china white, acetyl-fentanyl

    Categories

    Depressant Research-chemical Opioid
    Acetylfentanyl structure

    Summary TheDrug.Wiki Erowid TripSit PsychonautWiki

    Acetylfentanyl is 5-15 times more potent than heroin and 80 times more potent than morphine, making it extremely dangerous and easy to fatally overdose. This substance has been involved in hundreds of deaths worldwide and is often sold misrepresented as heroin or pressed into counterfeit pills. Volumetric dosing is absolutely critical due to extreme potency; unintentional skin contact with powder can result in overdose. Fentanyl test strips should be used on any suspected opioid supply. Have naloxone immediately available and never use alone.

    Dose Information TheDrug.Wiki TripSit PsychonautWiki

    ROA Light Common Strong Heavy
    Sublingual 5-10mg 10-15mg 15-20mg 20mg+
    Insufflated 5-10mg 10-15mg 15-20mg 20mg+
    Oral 1-3mg 3-5mg 5-7mg 7mg+
    Light Common Strong Heavy

    Onset, Duration & After-effects TheDrug.Wiki TripSit PsychonautWiki

    ROA Onset Peak Offset After Effects Total
    Sublingual 20-40 min 1-2 hrs 30-90 min 1-4 hrs 60-0 min
    Insufflated 5-15 min 30-90 min 30-60 min 1-3 hrs 60-0 min
    Oral 5-20 min 1.0-4.0 hrs - 1.0-8.0 hrs 60-0 min

    Tolerance

    Build-up develops within days of regular use; analgesic tolerance faster than respiratory depression tolerance
    Reset 7–14 days for partial reset; full reset may take weeks — tolerance loss greatly increases overdose risk

    Effects TheDrug.Wiki TripSit PsychonautWiki

    Positive
    • Pain Relief
    • Physical Euphoria
    • Cough Suppression
    • Analgesia
    Negative
    • Respiratory Depression
    • Dry Mouth
    Neutral
    • Sedation
    • Itchiness
    • Pupil Constriction
    • Difficulty Urinating
    • Relaxant
    Positive
    • Cognitive Euphoria
    • Anxiety Suppression
    • Dream Potentiation
    • Euphoria
    • Mood lift
    • Feelings of relaxation
    Negative
    • Constipation
    • Compulsive Redosing
    • Drowsiness
    Neutral
    • Changes in focus
    Positive
    Negative
    • Decreased Libido
    • Dehydration
    • Double Vision
    • Appetite Suppression
    • Orgasm Suppression
    • Orgasm depression
    • Acuity Suppression
    • Disinhibition
    • Light sensitivity
    Neutral
    • Dulled perception

    Combinations TripSit

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