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    Parafluorofentanyl

    Aliases: pff, 4-fluorofentanyl

    Categories

    opioid depressant habit-forming tentative

    Summary

    Rare, little known and extremely potent analogue of Fentanyl developed by Janssen Pharmaceutica in the 1960s. Use with extreme caution and never mix with other depressants.

    Dose Information

    Onset, Duration & After-effects

    • Onset:
      • Insufflated: 0-1 minutes
      • Oral: 5-10 minutes
    • Duration:
      • Insufflated: 2-3 hours
      • Oral: 3-4 hours
    • After-effects:
      • Insufflated: 1-2 hours
      • Oral: 1-4 hours