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

    Metaclazepam Limited data
    Limited data
    Sparse data. Doses and effects may be unreliable or untested.
    • 1 source
    • 1 ROA with full dose ladder
    • 27 combo interactions documented
    • classified Tentative

    Depressant Benzodiazepine

    Summary TripSit

    A benzodiazepine derivative. Which is mostly an anxiolytic substance, without strong hypnotic properties that most benzodiazepines have. Its active metabolite is N-desmethylmetaclazepam, which is the main metabolite.

    Dose Information TripSit

    ROA Light Common Strong Heavy
    Oral 9.5mg-18.75mg 18.75mg 35-50mg 50mg+
    Light Common Strong Heavy
    Sources

    Oral

    Dose ladder — TripSit

    Effect Profile

    Scores (0–10) curated from multiple sources:

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

    Full methodology

    Benzodiazepine 4.7
    Moderate+ 5/10

    Strong euphoria with low anxiolysis, sedation, and cognitive impairment

    Anxiolysis ×3
    3
    reduced anxiety
    Sedation / Relaxation ×2
    3
    sedation
    ⚠ Motor / Cognitive Impairment ×1
    2
    confusion
    Euphoria / Mood Lift ×1
    10
    euphoria cognitive euphoria disinhibition
    View methodology →

    Tolerance

    Build-up develops over 1–4 weeks of daily use; hypnotic tolerance faster than anxiolytic tolerance
    Reset Falls after you stop, at a rate that varies from person to person. If you've been using regularly, cut down gradually with medical help rather than stopping suddenly.

    No tolerance chart. Our decay curves for these drugs were estimates, and a curve can make tolerance look longer-lasting than it is, which is the dangerous direction.

    How fast tolerance to these drugs fades after a break has not been measured well enough to draw, so don't count on a dose you used to take still being safe: after time off, start with a much smaller amount and don't use alone. Mixing sedatives with each other, with alcohol or with opioids sharply raises the risk of a fatal overdose. If you've been using regularly, don't stop suddenly: withdrawal from benzodiazepines, alcohol or GHB/GBL can cause seizures or delirium, so get medical help to cut down gradually.

    Sources: FRANK: benzodiazepines · Alcohol and Drug Foundation: GHB · FDA 2020: benzodiazepine boxed warning · FDA 2019: gabapentinoids and breathing · NHS: alcohol use disorder

    Effects

    Positive
    Negative
    Neutral
    Positive
    Negative
    Neutral
    Positive
    Negative
    Neutral

    Combinations TripSit

    Cross-Check Metaclazepam with another substance

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

    Helpful Links

    💊 Pill Identifier 📖 TripSit
    Add to PsychonautWiki Journal

    The PsychonautWiki Journal logging app doesn't include every substance. To track Metaclazepam there, start adding an ingestion, search for the name, and choose to add it as a custom substance. Paste these values:

    ⬇ Download import file Import this file as custom substances and you get "Metaclazepam (Substance Search)" with every route's full dose ladder and timeline, no typing. Works on iOS and Android (v15+); the format is confirmed by the app's developer. The manual values below work for older versions.
    Name
    Metaclazepam
    Unit
    mg
    Description 
    Metaclazepam
Source: SubstanceSearch (substancesearch.com)

Oral dose (mg): light 9.5-18.75 · common 18.75 · strong 35-50 · heavy 50+

Oral duration: after-effects 1-24h

Note: ranges are harm-reduction guidance, not a prescription. Start low, go slow, and test your substances.

    Tip: for quicker logging you can also add a Custom Unit in the app, e.g. common dose ~ 26.88 mg (Oral).

    The app keeps custom substances simple, so the full dose ranges live in the description text above. Ranges are harm-reduction guidance, not a prescription.