Home
    Disclaimer
    ⚠ Benzodiazepines can cause physical dependence with regular use. Withdrawal can be life-threatening. Never combine with opioids or alcohol.

    Flutoprazepam

    Aliases: Restas, Kb-509

    Depressant Benzodiazepine

    Summary TheDrug.Wiki TripSit

    Flutoprazepam is an extremely long-acting benzodiazepine primarily used in Japan for severe insomnia and as an anticonvulsant. It is approximately 4 times more potent than diazepam by weight. The extremely long duration is due to its active metabolite norflurazepam (90 hour half-life), which causes significant accumulation and next-day sedation.

    Dose Information TheDrug.Wiki TripSit

    ROA Light Common Strong Heavy
    Oral 0.5-1mg 1.5-3mg 3-5mg 5mg+
    Light Common Strong Heavy

    Benzo Equivalence Calculator

    mg
    2.5 mg Flutoprazepam
    =
    — mg Diazepam

    ⚠ These are approximate equivalences for educational and cross-tapering reference. Individual response, tolerance, and half-life differences mean actual equivalence varies. Always consult a healthcare provider for tapering guidance.

    Onset, Duration & After-effects TheDrug.Wiki TripSit

    ROA Onset Comeup Peak After Effects Total
    Oral 30-90 min 1-2 hrs 2-12 hrs 24-36 hours 3.5-15.5 hrs

    Effect Profile

    1 reports

    Scores (1–10) curated from multiple sources:

    • Effect keyword matching from PsychonautWiki catalog
    • Weighted by importance: core (×3), major (×2), minor (×1)

    Full methodology

    Benzodiazepine 7.4
    Strong+ 7/10

    Strong anxiolysis, euphoria, and cognitive impairment with mild sedation

    Anxiolysis ×3
    10
    anxiety suppression anxiolytic muscle relaxation muscle relaxant emotion suppression
    Sedation / Relaxation ×2
    5
    sedation muscle relaxation
    ⚠ Motor / Cognitive Impairment ×1
    8
    motor control loss amnesia delusions of sobriety double vision
    Euphoria / Mood Lift ×1
    10
    cognitive euphoria physical euphoria disinhibition
    Based on reports from:
    Erowid Experience Reports PsychonautWiki Flutoprazepam
    View methodology →

    Tolerance

    Build-up develops over 1–4 weeks of daily use; hypnotic tolerance faster than anxiolytic tolerance
    Reset weeks to months depending on half-life and duration of use; taper recommended

    Tolerance Decay

    Full tolerance 14d Half tolerance 10d Baseline ~21d

    Benzodiazepine tolerance builds with frequent exposure (days–weeks) and decays slowly (weeks). Cross-tolerance exists across most GABA-A positive allosteric modulators. Figures are approximate and largely based on clinical practice patterns and community experience rather than controlled trials for this specific drug.

    Cross-Tolerances

    Other benzodiazepines
    100%
    Z-drugs
    50%
    Barbiturates
    30%

    Effects TheDrug.Wiki TripSit

    Positive
    • Muscle relaxation
    • Physical euphoria
    • Anxiolytic
    • Muscle Relaxant
    Negative
    • Respiratory depression
    • Motor impairment
    Neutral
    • Sedation
    • Sedative
    • Dystaxia
    • Hypnotic
    Positive
    • Anxiety suppression
    • Cognitive euphoria
    Negative
    • Motor control loss
    • Amnesia
    • Emotion suppression
    • Delusions of sobriety
    • Dream suppression
    • Thought deceleration
    • Dizziness
    • Compulsive redosing
    Positive
    • Increased libido
    • Appetite enhancement
    Negative
    • Disinhibition
    • Acuity suppression
    • Visual acuity suppression
    • Decreased Libido
    • Acuity Suppression
    • Double vision
    Neutral
    • Dulled perception
    • Perception of bodily heaviness

    Combinations TripSit

    Flutoprazepam's nerd page Pharmacology, chemical data, effect profiles, and more
    →

    Helpful Links

    💊 Pill Identifier 📘 Experience Reports 📖 TheDrug.Wiki 📖 TripSit 📖 PsychonautWiki