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    CBN Well-documented
    Well-documented
    Multiple authoritative sources agree on dosing and effects.
    • 4 corroborating sources
    • 3 ROAs with full dose ladders
    • duration data present
    • 16 combo interactions documented
    • toxicity data (PsychonautWiki)
    • dose data not in PW/TripSit (unverifiable)

    Aliases: Sleepy cannabinoid

    Depressant Cannabinoid

    Summary dose.wiki PsychonautWiki

    Cannabinol (CBN) is a mildly psychoactive cannabinoid formed mainly as an oxidative breakdown product of THC, so it accumulates in aged or poorly stored cannabis. It is a weak partial agonist at the CB1 receptor — far less potent than THC — which is why it produces at most mild intoxication. CBN is widely marketed as a sleep aid, but robust human evidence for a sedative effect on its own is limited, and its historical “sedating” reputation may partly reflect other compounds in degraded cannabis. It is distinct from cannabis/THC and from CBD.

    Dose Information dose.wiki Drugs.Wiki

    Dose basis. Dose ranges primarily aggregated from user reports and cannabinoid PK analogies; interindividual variability is high. Start low and wait at least 2 hours before considering a redose. High-fat meals likely increase absorption of lipophilic cannabinoids, potentially intensifying and prolonging effects (inference from CBD/cannabis data). User-reported; absorption may be faster than oral but still slower than inhalation. Avoid swallowing for 60–120 seconds to maximize mucosal uptake. (Dose figures and this note are from Drugs.Wiki.)

    ROA Light Common Strong Heavy
    Oral 2-5mg 5-20mg 20-40mg 40mg+
    Sublingual 2-4mg 4-15mg 15-30mg 30mg+
    Vaporized 1-3mg 3-10mg 10-20mg 20mg+
    Light Common Strong Heavy

    Onset, Duration & After-effects dose.wiki Drugs.Wiki

    ROA Onset Comeup Peak Offset After Effects Total
    Oral 30-90 min 30-60 min 1-3 hrs 2-4 hrs 2-6 hrs 4-9.5 hrs
    Sublingual 15-45 min 20-40 min 1-3 hrs 2-4 hrs 2-6 hrs 3.58-8.42 hrs
    Vaporized 1-5 min 5-15 min 30-90 min 1-2 hrs 2-6 hrs 1.6-3.83 hrs

    Add to PsychonautWiki Journal

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

Oral dose (mg): threshold 1 · light 2-5 · common 5-20 · strong 20-40 · heavy 40+
Sublingual dose (mg): threshold 1 · light 2-4 · common 4-15 · strong 15-30 · heavy 30+
Vaporized dose (mg): threshold 1 · light 1-3 · common 3-10 · strong 10-20 · heavy 20+

Oral duration: onset 0.5-1.5h · come-up 0.5-1h · peak 1-3h · offset 2-4h · total 4-9.5h · after-effects 2-6h
Sublingual duration: onset 15-45m · come-up 20-40m · peak 1-3h · offset 2-4h · total 3.58-8.42h · after-effects 2-6h
Vaporized duration: onset 1-5m · come-up 5-15m · peak 0.5-1.5h · offset 1-2h · total 1.6-3.83h · after-effects 2-6h

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 ~ 12.5 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 over weeks of regular use via CB1 receptor downregulation
    Reset 2–4 weeks for most users; heavy users may need longer

    Tolerance Decay

    Half tolerance 14d Baseline ~21d

    Limited direct data; pattern inferred from broader cannabinoid use. Psychological habituation to nightly use as a sleep cue can occur.

    Effects dose.wiki

    Positive
    • Physical relaxation
    • Anxiolysis
    • Mild analgesia
    • Reduced muscle tension
    • Appetite stimulation
    • Muscle relaxation
    • Physical euphoria
    Negative
    • Dry mouth and eyes
    Neutral
    • Sedation
    • Sleepiness
    Positive
    • Subtle mood lift
    • Reduced anxiety
    • Anxiety suppression
    • Cognitive euphoria
    Negative
    • Mild dizziness at higher doses
    • Motor control loss
    • Amnesia
    • Dizziness
    • Thought deceleration
    • Compulsive redosing
    Positive
    • Increased libido
    • Appetite enhancement
    Negative
    • Disinhibition
    • Acuity suppression
    • Double vision
    • Visual acuity suppression
    Neutral
    • Dulled perception
    • Internal hallucination
    • Internal hallucinations
    • Perception of bodily heaviness

    Combinations

    Cross-Check CBN with another substance

    Interaction data below is inherited from cannabis/THC and has not been established specifically for CBN; treat it as a cautious upper bound.

    CBN's nerd page Pharmacology, chemical data, effect profiles, and more
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    Helpful Links

    📘 Experience Reports 📖 dose.wiki 📖 PsychonautWiki