Hey everybody. I'm new here, spent alot of time reading as a guest, but I have found very little information on this substance, and since I've gotten ahold of some, I feel it's my duty to share my experiences to give information to others interested in trying this new benzo or just curious about it.
Norflurazepam
Encyclopedic
Encyclopedic
Typical encyclopedia coverage. Cross-reference for important decisions.
- 3 corroborating sources
- 1 ROA with full dose ladder
- duration data present
- 27 combo interactions documented
- classified Tentative
- classified Research-chemical
Encyclopedic
Typical encyclopedia coverage. Cross-reference for important decisions.
- 3 corroborating sources
- 1 ROA with full dose ladder
- duration data present
- 27 combo interactions documented
- classified Tentative
- classified Research-chemical
Aliases: Norfludiazepam, N-desalkylflurazepam, N-desalkyl-2-oxoquazepam
Summary
Norflurazepam is a long-acting benzodiazepine and an active metabolite of several pharmaceutical benzodiazepines including flurazepam, quazepam, and midazolam. It has been available as a research chemical since 2016. Due to its extremely long half-life (47-150 hours, up to 200 hours in some individuals), it is prone to accumulation with repeated dosing and may remain detectable in the body for days after use.
Dose Information
| ROA | Light | Common | Strong | Heavy |
|---|---|---|---|---|
| Oral | 2-5mg | 5-10mg | 10-20mg | 20mg+ |
Light
Common
Strong
Heavy
Sources
Oral
Dose ladder — dose.wiki, PsychonautWiki, TripSitOnset, Duration & After-effects
| ROA | Onset | Comeup | Peak | Offset | Total |
|---|---|---|---|---|---|
| Oral | 0.5-2 hrs | 30-60 min | 2-4 hrs | 6-12 hrs | 10-16 hrs |
Effect Profile
Scores (0–10) curated from multiple sources:
- Effect keyword matching from PsychonautWiki catalog
- Weighted by importance: core (×3), major (×2), minor (×1)
Benzodiazepine
7.6
Intense
8/10
Strong anxiolysis and euphoria with moderate 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
7
motor control loss
amnesia
delusions of sobriety
Euphoria / Mood Lift
×1
10
cognitive euphoria
physical euphoria
disinhibition
Tolerance
Build-up
develops over 1–4 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 · Alcohol and Drug Foundation: GHB · FDA 2020: benzodiazepine boxed warning · FDA 2019: gabapentinoids and breathing · NHS: alcohol use disorder
Cross-Tolerances
Other benzodiazepines
Z‑drugs (e.g., zolpidem)
Effects
Effect glossary — · full glossary
Positive
Negative
Positive
Negative
Negative
Combinations
Cross-Check Norflurazepam 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.
Bluelight 2 threads 1 neutral 1 cautionary visit
Yeah, i swallow two blue pills. 20mg. Feel the effect and sleep very good. The next dat was also very good. It wasnt very physical, like diazepam. That youre muscles are very relaxing. Its was muscle relaxing, but not that intens.
Norflurazepam's nerd page
Pharmacology, chemical data, effect profiles, and more
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Helpful Links
Add to PsychonautWiki Journal
The PsychonautWiki Journal logging app doesn't include every substance. To track Norflurazepam 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 "Norflurazepam (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
Norflurazepam
Unit
mg
Description
Norflurazepam Source: SubstanceSearch (substancesearch.com) Oral dose (mg): light 2-5 · common 5-10 · strong 10-20 · heavy 20+ Oral duration: onset 0.5-2h · come-up 0.5-1h · peak 2-4h · offset 6-12h · total 10-16h · after-effects 24h 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.
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Spotted incorrect or dangerous information, have a correction, a new study, or a useful addition for Norflurazepam? Let us know. Reports are reviewed by moderators — this is not posted publicly.