The below tests were run in isolation of any other substances. I have no benzodiazepine tolerance, although I have previously taken pharmaceutical lorazepam 1mg and clonazepam 0.25mg, both to good effect.
Bromazolam
Encyclopedic
Encyclopedic
Typical encyclopedia coverage. Cross-reference for important decisions.
- 3 corroborating sources
- 2 ROAs with full dose ladders
- duration data present
- 27 combo interactions documented
- classified Tentative
- classified Research-chemical
Encyclopedic
Typical encyclopedia coverage. Cross-reference for important decisions.
- 3 corroborating sources
- 2 ROAs with full dose ladders
- duration data present
- 27 combo interactions documented
- classified Tentative
- classified Research-chemical
Aliases: Brom, Bromaz, Xli-268, xli268
Summary
Bromazolam is a potent designer benzodiazepine structurally analogous to alprazolam (Xanax), never approved for medical use. It is commonly found in counterfeit pharmaceutical tablets and pressed pills sold as alprazolam or diazepam. Combining with other CNS depressants greatly increases overdose risk, respiratory depression, and death.
Dose Information
| ROA | Light | Common | Strong | Heavy |
|---|---|---|---|---|
| Oral | 0.5-1mg | 1-2mg | 2-4mg | 4mg+ |
| Sublingual | 0.5-1mg | 1-2mg | 2-4mg | 4mg+ |
Onset, Duration & After-effects
| ROA | Onset | Comeup | Peak | Offset | Total |
|---|---|---|---|---|---|
| Oral | 15-45 min | 30-60 min | 2-4 hrs | 2-6 hrs | 5-8 hrs |
| Sublingual | 10-30 min | 20-45 min | 2-4 hrs | 2-6 hrs | 5-8 hrs |
Effect Profile
3 reportsScores (0–10) curated from multiple sources:
- Effect keyword matching from PsychonautWiki catalog
- Weighted by importance: core (×3), major (×2), minor (×1)
Benzodiazepine
7.1
Strong+
7/10
Strong anxiolysis and euphoria with strong cognitive impairment, mild sedation
Anxiolysis
×3
10
anxiety suppression
anxiolytic
muscle relaxation
muscle relaxant
emotion suppression
Sedation / Relaxation
×2
5
sedation
muscle relaxation
Motor / Cognitive Impairment
×1
10
motor control loss
memory suppression
amnesia
delusions of sobriety
double vision
Euphoria / Mood Lift
×1
10
euphoria
physical euphoria
disinhibition
Based on reports from:
Tolerance
Build-up
develops over 1β4 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 Β· Alcohol and Drug Foundation: GHB Β· FDA 2020: benzodiazepine boxed warning Β· FDA 2019: gabapentinoids and breathing Β· NHS: alcohol use disorder
Cross-Tolerances
Benzodiazepines
Effects
Aggregated from 3 single-substance Erowid experience reports; 1 Erowid reports where another drug was taken too are left out
Each bar shows the share of analyzed reports whose text mentions that effect — a mention is not always a first-hand experience (fear of an effect or something witnessed can count). Mentions saying the effect did not happen are left out; that check reads keywords, so it can miss some. The shaded band on a bar, and the small range after its number, is the 95% interval: where the share could plausibly be with other reports of the same kind. Fewer reports, wider band. Tap or hover any number for details. The second value is the Bluelight extractor's per-effect confidence; a dash means the row is Erowid-derived, which has no confidence measurement.
Too few reports for bars: these effects come from 3 single-substance Erowid reports, and a bar is drawn only from 20 reports or more. With fewer, a percentage cannot tell a common effect from a rare one. Counts are shown instead. Why 20?
Effect glossary — · full glossary
Positive Effects 1
3 of 3
–
Adverse Effects 0
Also reported in combinations. In the 1 Bromazolam report where another drug was taken too, 0 mention hospital, emergency services or an overdose, 1 a seizure and 0 psychosis (too few reports for percentages). In the 3 single-substance reports: 0, 0 and 0. These are not in the figures above: they cannot be put down to Bromazolam alone, and a mention is not always something that happened to the writer.
Combinations
Cross-Check Bromazolam with another substanceCommunity Trip Reports
Anecdotal first-person accounts from Reddit, Erowid, Bluelight, and Dose.wiki. 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 1 positive 1 neutral 1 cautionary visit
Dose (oral solution): 0.12 mg bromazolam (3 drops) 0.16 mg bromazolam (4 drops) 0.24 mg bromazolam (6 drops) 0.24 mg bromazolam (6 drops) Total 0.76 mg bromazolam (19 drops) This is report of my first time using this substance. Background: 45 yr old male with no benzo tolerance.
Unfortunately I didnΒt record exact times or dosages for an accurate report so this is a general overview. First dose: Saturday evening around 6-8pm ROA: I was using a bottle of 10mg/ml solution of Bromazolam, which tasted terrible so I would put 2 drops at a time in the food I was eating to avoid the taste.
Bromazolam's nerd page
Pharmacology, chemical data, effect profiles, and more
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Helpful Links
Add missing routes to PsychonautWiki Journal
The PsychonautWiki Journal app already has Bromazolam, but its built-in entry only covers Oral. Here are the other routes we have data for. You can't edit a built-in substance, but you can add a Custom Unit for any of these routes to log it.
⬇ Download import file
Import this file as custom substances
and you get "Bromazolam (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.
Custom Unit doses
- Sublingualcommon ~ 1.5 mg
Dose & duration (reference)
Bromazolam: routes the PsychonautWiki Journal app is missing Source: SubstanceSearch (substancesearch.com) Sublingual dose (mg): threshold 0.25 Β· light 0.5-1 Β· common 1-2 Β· strong 2-4 Β· heavy 4+ Sublingual duration: onset 10-30m Β· come-up 20-45m Β· peak 2-4h Β· offset 2-6h Β· total 5-8h Β· after-effects 12-24h Note: ranges are harm-reduction guidance, not a prescription. Start low, go slow, and test your substances.
Custom Units carry a single dose per route, so the full ranges live in the reference above. A route's suggested dose is the midpoint of its common range. Ranges are harm-reduction guidance, not a prescription.
Report an issue or suggest an edit
Spotted incorrect or dangerous information, have a correction, a new study, or a useful addition for Bromazolam? Let us know. Reports are reviewed by moderators — this is not posted publicly.