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. Volumetric dosing is essential: dissolve a known amount in a measured volume (e.g., 1 mg in 10-20 mL ethanol/propylene glycol), mix thoroughly, and measure doses with an oral syringe; do not eyeball powders or shave tablets. Wait a full 3-4 hours before considering any redose due to delayed peak and amnesia.
Klobromazolam molecular structure diagram from the DrugsPRO substance library.
Also known as: Dm-ii-90, Phenazolam, Brn 4550445, RC/triazolobenzodiazepine
Classification
Chemical: Benzodiazepine
Psychoactive: Depressant
Tag: Anxiolytic
Tag: GABAergic
Tag: Muscle Relaxant
Tag: Research-Chemical
Tag: Sedative
Effects
Sedation
Muscle Relaxation
Residual Sleepiness
Pronounced Sedation
Strong Anxiolysis
Motor Incoordination
Anxiety Suppression
Memory Suppression
Motor Control Loss
Emotion Suppression
Delusions Of Sobriety
Compulsive Redosing
Disinhibition
Dulled Perception
Routes of Administration
Oral / Sublingual (Volumetric only)
Dosage
Threshold: 0.05 mg
Light: 0.05-0.15 mg
Common: 0.15-0.30 mg
Strong: 0.30-0.50 mg
Heavy: 0.5 mg
Duration
Onset: 1-2 h
Comeup: 0.5-1 h
Peak: 2-6 h
Offset: 4-10 h
After Effects: 12-36 h
Rectal (Dissolved Solution)
Dosage
Threshold: 0.05 mg
Light: 0.05-0.15 mg
Common: 0.15-0.30 mg
Strong: 0.30-0.50 mg
Heavy: 0.5 mg
Duration
Onset: 0.75-2 h
Comeup: 0.5-1 h
Peak: 2-6 h
Offset: 4-10 h
After Effects: 12-36 h
Oral (Volumetric Solution; 1 MG / 10 ML)
Dosage
Threshold: 0.05-0.10 mg
Light: 0.10-0.25 mg
Common: 0.25-0.60 mg
Strong: 0.60-1.00 mg
Heavy: 1 mg
Duration
Onset: 0.25-0.75 h
Peak: 1-3 h
Offset: 4-10 h
After Effects: 12-24 h
Sublingual (Odt / Liquid)
Dosage
Threshold: 0.05 mg
Light: 0.10-0.20 mg
Common: 0.20-0.50 mg
Strong: 0.50-0.80 mg
Heavy: 0.8 mg
Duration
Onset: 0.25-0.75 h
Peak: 1-3 h
Offset: 4-10 h
After Effects: 12-24 h
Oral
Dosage
Heavy: 0.50 mg+
Light: 0.05–0.15 mg
Common: 0.15–0.30 mg
Strong: 0.30–0.50 mg
Threshold: 0.05–0.10 mg
Duration
Onset: 0.75-1.5 h
Peak: 2-6 h
Offset: 6-10 h
After Effects: 12-36 h
Total Duration: 8-14 h
Sublingual
Dosage
Heavy: 0.50 mg+
Light: 0.05–0.15 mg
Common: 0.15–0.30 mg
Strong: 0.30–0.50 mg
Threshold: 0.05 mg
Duration
Onset: 0.25-1 h
Peak: 1.5-4 h
Offset: 5-14 h
After Effects: 10-24 h
Total Duration: 8-16 h
Rectal
Dosage
Heavy: 0.50 mg+
Light: 0.05–0.15 mg
Common: 0.15–0.30 mg
Strong: 0.30–0.50 mg
Threshold: 0.05 mg
Duration
Onset: 0.5-1.25 h
Peak: 2-6 h
Offset: 6-10 h
After Effects: 12-36 h
Total Duration: 8-14 h
Harm Reduction
Check interactions before mixing substances, pay attention to dose spacing and hydration, and treat all dosage guidance as approximate rather than guaranteed safe.
Sources
Substance data is aggregated from the following public harm-reduction and reference sources.
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Clobromazolam - przewodnik po substancji DrugsPRO
Clobromazolam: 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 alprazola
