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    Disclaimer
    🧪 This is a research chemical with limited data on its long-term health effects, toxicity profile, and safe dosage ranges.
    ⚠ Opioids carry significant risk of respiratory depression, physical dependence, and fatal overdose. Never combine with other depressants.

    4Cl-iBF

    Aliases: P-chloro-isobutyrylfentanyl, Para-chloroisobutyrylfentanyl

    Categories

    Depressant Research-chemical Opioid
    4Cl-iBF structure

    Summary TheDrug.Wiki

    Potency of 4Cl-iBF is not precisely established but in vitro binding suggests it is weaker than fentanyl yet far more potent than morphine - DO NOT eyeball powder; use a calibrated 0.1 mg (100 ug) scale or volumetric solution. Numerous post-mortem and seized-sample reports confirm involvement in fatal overdoses; naloxone reverses toxicity but may require repeated dosing because of longer half-life than naloxone. Strong histamine release and chest-wall rigidity have been described with analogous compounds. Always employ test-dose strategy and never use alone - respiratory depression can appear abruptly during or immediately after peak. Fentanyl testing strips are unlikely to detect 4Cl-iBF reliably.

    Dose Information TheDrug.Wiki

    Light Common Strong Heavy

    Onset, Duration & After-effects TheDrug.Wiki

    ROA Onset Peak Offset After Effects
    Insufflated 2-5 min 15-45 min 1-2 hrs 2-6 hrs
    Sublingual 5-15 min 15-45 min 1-2 hrs 2-6 hrs
    Intravenous - 15-45 min 1-2 hrs 2-6 hrs

    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

    Positive
    • Analgesia
    • Anxiolysis
    • Physical euphoria
    • Pain relief
    Negative
    • Itching
    • Nausea
    • Respiratory depression
    Neutral
    • Sedation
    • Miosis
    • Pupil constriction
    Positive
    • Euphoria
    • Reduced anxiety
    • Cognitive euphoria
    • Anxiety suppression
    • Mood lift
    Negative
    • Constipation
    • Dizziness
    • Compulsive redosing
    • Motor control loss
    Neutral
    • Physical autonomy
    Positive
    • Warmth
    • Color enhancement
    • Increased music appreciation
    • Brightened colour
    Negative
    • Light sensitivity
    • Appetite suppression
    • Disinhibition
    • Dehydration
    Neutral
    • Dulled perception
    • Drifting

    Combinations TripSit

    Helpful Links

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