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    ⚠ Opioids carry significant risk of respiratory depression, physical dependence, and fatal overdose. Never combine with other depressants.

    Ketobemidone Well-documented
    Well-documented
    Multiple authoritative sources agree on dosing and effects.
    • 3 corroborating sources
    • 2 ROAs with full dose ladders
    • duration data present
    • 19 combo interactions documented

    Aliases: Kbd

    Depressant Opioid

    Summary TripSit PsychonautWiki

    Ketobemidone (also known by the brand names Ketogan, and Ketorax) is an opioid substance of the piperidine class. It belongs to a group of synthetic opioids. The mechanism of action involves binding activity at opioid receptors.

    Dose Information TripSit

    ROA Light Common Strong Heavy
    Oral 5mg 5-10mg 10-15mg 15mg+
    Rectal 2-4mg 7.5-11.5mg 11.5-20mg 20mg+
    Light Common Strong Heavy

    Onset, Duration & After-effects TripSit

    ROA Onset Peak After Effects
    Oral 45-60 min 4-8 hrs 1-8 hrs

    Effect Profile

    3 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

    Opioid 6.3
    Strong 6/10

    Strong euphoria with moderate itching/nausea, mild pain relief, low sedation

    Euphoria / Warmth ×3
    10
    physical euphoria euphoria cognitive euphoria mood lift
    Analgesia ×2
    4
    analgesia
    Sedation / Relaxation ×1
    3
    sedation
    ⚠ Itching / Nausea ×1
    7
    nausea constipation dry mouth
    Based on reports from:
    Erowid Experience Reports PsychonautWiki Ketobemidone
    View methodology →

    Add to PsychonautWiki Journal

    The PsychonautWiki Journal logging app doesn't include every substance. To track Ketobemidone 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 "Ketobemidone (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
    Ketobemidone
    Unit
    mg
    Description 
    Ketobemidone
Source: SubstanceSearch (substancesearch.com)

Oral dose (mg): light 5 · common 5-10 · strong 10-15 · heavy 15+
Rectal dose (mg): threshold 2 · light 2-4 · common 7.5-11.5 · strong 11.5-20 · heavy 20+

Oral duration: onset 0.75-1h · peak 4-8h · after-effects 1-8h

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 ~ 7.5 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.

    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

    Tolerance Decay

    Full tolerance 1d Half tolerance 21d Baseline ~35d

    Effects Erowid

    Aggregated from 3 Erowid experience reports

    Positive Effects 1

    Euphoria 100.0% 70%

    Adverse Effects 1

    Nausea 100.0% 70%

    Combinations TripSit

    Cross-Check Ketobemidone with another substance

    Community Trip Reports

    Anecdotal first-person accounts from Reddit, Erowid, and Bluelight. Click a source to expand. Reports are harm-reduction context, not medical guidance. Tags summarise each author's own verdict — how reports are classified.

    Erowid 3 reports 2 positive 1 neutral visit
    A Pleasant Trip positive exp #61428

    I got a hold of 3 Ketogan suppositories. They each contained 10 mg ketobemidone. I took one during an evening I was a little bored and layed flat on the bed waiting for the pill to take its effects. As I then proceeded to sit in my chair, I slowly began feeling a lift in my mood.

    Christoffer · 10 mg rectal / smoked
    Noticing the All-to-Familiar Effects neutral exp #90282

    A Schoolday on Ketobemidone It happened in 2008 during 10th. Grade. I live in Denmark, and as some of you may know, Denmark is the country that prescribes the most Ketobemidone (known as Ketogan here), at least in Scandinavia.

    T-man · 25 mg oral
    A True Bliss positive exp #112389

    I remember it like it was yesterday, summer of 2017 and my first time trying a 'real' opiate. I headed over to my good friends apartment and he had the pills (he was selling all kinds of things speed, cocaine and pills) the godly Ketogan [Ketobemidone & Dimethylaminodiphenylbutene] pills.

    OpiateLove · 5 mg oral / smoked / 5 mg oral / 1 cig. smoked
    Ketobemidone's nerd page Pharmacology, chemical data, effect profiles, and more
    →

    Helpful Links

    💊 Pill Identifier 📘 Experience Reports 📖 TripSit 📖 PsychonautWiki