Clobromazolam
Encyclopedic
Encyclopedic
Typical encyclopedia coverage. Cross-reference for important decisions.
- 2 corroborating sources
- 3 ROAs with full dose ladders
- duration data present
- 17 combo interactions documented
- classified Research-chemical
- dose data not in PW/TripSit (unverifiable)
- 2 corroborating sources
- 3 ROAs with full dose ladders
- duration data present
- 17 combo interactions documented
- classified Research-chemical
- dose data not in PW/TripSit (unverifiable)
Aliases: Dm-ii-90, Phenazolam, Brn 4550445
Summary
Phenazolam is the same compound as clobromazolam; it first appeared on the market circa 2016 and has no approved medical use. Forum meta-reports consistently place its potency at approximately 40 times that of diazepam, with 0.25 mg often compared to 10 mg diazepam or 0.5 mg alprazolam; avoid any pressed tablets claiming multi-milligram doses. Onset is notably slow for a triazolobenzodiazepine, often 1-2 hours and sometimes 3 hours, which greatly increases redosing risk and blackout potential.
Dose Information
Dose basis. Ranges compiled from aggregated user reports on harm-reduction forums; not clinical data. Extreme sub-milligram potency — volumetric dosing strongly advised. Pressed tablets/pellets on the market have been reported at 1–3 mg and can be dangerously overdosed; never ‘eyeball’ powders or shave tablets. Sources: Bluelight megathread, Reddit PSA/warnings. Frequently equivalent to oral in onset and duration for this compound; users often swallow saliva before full absorption. Use volumetric solutions to meter microgram-level doses. (Dose figures and this note are from Drugs.Wiki.)
| ROA | Light | Common | Strong | Heavy |
|---|---|---|---|---|
| Oral | 0.05-0.15mg | 0.15-0.30mg | 0.30-0.50mg | 0.50mg+ |
| Sublingual | 0.05-0.15mg | 0.15-0.30mg | 0.30-0.50mg | 0.50mg+ |
| Rectal | 0.05-0.15mg | 0.15-0.30mg | 0.30-0.50mg | 0.50mg+ |
Onset, Duration & After-effects
| ROA | Onset | Peak | Offset | Total |
|---|---|---|---|---|
| Oral | 0.75-2 hrs | 2-6 hrs | 4-10 hrs | 8-16 hrs |
| Sublingual | 0.75-2 hrs | 2-6 hrs | 4-10 hrs | 8-16 hrs |
| Rectal | 0.75-2 hrs | 2-6 hrs | 4-10 hrs | 8-16 hrs |
Effect Profile
Scores (1–10) curated from multiple sources:
- Effect keyword matching from PsychonautWiki catalog
- Weighted by importance: core (×3), major (×2), minor (×1)
Strong anxiolysis, sedation, and cognitive impairment with moderate euphoria
Add to PsychonautWiki Journal
The PsychonautWiki Journal logging app doesn't include every substance. To track Clobromazolam there, start adding an ingestion, search for the name, and choose to add it as a custom substance. Paste these values:
Clobromazolam Source: SubstanceSearch (substancesearch.com) Oral dose (mg): threshold 0.05 · light 0.05-0.15 · common 0.15-0.30 · strong 0.30-0.50 · heavy 0.50+ Sublingual dose (mg): threshold 0.05 · light 0.05-0.15 · common 0.15-0.30 · strong 0.30-0.50 · heavy 0.50+ Rectal dose (mg): threshold 0.05 · light 0.05-0.15 · common 0.15-0.30 · strong 0.30-0.50 · heavy 0.50+ Oral duration: onset 0.75-2h · peak 2-6h · offset 4-10h · total 8-16h · after-effects 12-36h Sublingual duration: onset 0.75-2h · peak 2-6h · offset 4-10h · total 8-16h · after-effects 12-36h Rectal duration: onset 0.75-2h · peak 2-6h · offset 4-10h · total 8-16h · after-effects 12-36h 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 ~ 0.22 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
Tolerance Decay
Acute tolerance: develops within a single session — the reset numbers above apply after sustained heavy use, not after one binge. Within-session tachyphylaxis usually resets largely overnight.
Benzodiazepine sedative/hypnotic tolerance can develop rapidly with daily use; partial reversal requires weeks to months of abstinence and is highly individualized. Data are largely anecdotal; treat any numerical model as a rough guide only. Avoid consecutive‑day use to limit tolerance and dependence risk.
Cross-Tolerances
Effects
- Muscle relaxation
- Strong anxiolysis
- Anxiolytic
- Physical euphoria
- Rebound insomnia
- Sedation
- Residual sleepiness
- Pronounced sedation
- Motor incoordination
- Sedative
- Anxiety suppression
- Mild euphoria
- Memory suppression
- Motor control loss
- Emotion suppression
- Delusions of sobriety
- Compulsive redosing
- Thought deceleration
- Dizziness
- Severe anterograde amnesia
- Rebound anxiety
- Increased libido
- Appetite enhancement
- Disinhibition
- Decreased Libido
- Acuity Suppression
- Double vision
- Visual acuity suppression
- Dulled perception
- Perception of bodily heaviness
Combinations
Cross-Check Clobromazolam with another substanceHelpful Links
Report an issue or suggest an edit
Spotted incorrect or dangerous information, have a correction, a new study, or a useful addition for Clobromazolam? Let us know. Reports are reviewed by moderators — this is not posted publicly.