Been taking tetrazepam (a not well-known benzo) for a few months (got them prescibed for neck problem), but never exceeded about 150mg at a time, which was already enough to get me sort of high, extremely relaxed in any case...decided the other day that I wanted to get really high though, took 300 mg (that's equivalent...
Tetrazepam
Encyclopedic
Encyclopedic
Typical encyclopedia coverage. Cross-reference for important decisions.
- 1 source
- 1 ROA with full dose ladder
- duration data present
- 27 combo interactions documented
- PubChem toxicity data
Encyclopedic
Typical encyclopedia coverage. Cross-reference for important decisions.
- 1 source
- 1 ROA with full dose ladder
- duration data present
- 27 combo interactions documented
- PubChem toxicity data
Summary
A benzodiazepine that has most of the properties of more common benzodiazepines. Yet was taken off the market in 2013. Has been noted to be more euphoric than most others.
Dose Information
| ROA | Light | Common | Strong | Heavy |
|---|---|---|---|---|
| Oral | 25-50mg | 50-100mg | 100-200mg | 200mg+ |
Onset, Duration & After-effects
| ROA | Onset | Peak |
|---|---|---|
| Oral | 15-35 min | 6-10 hrs |
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
Combinations
Cross-Check Tetrazepam 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 1 thread 1 cautionary visit
Tetrazepam's nerd page
Pharmacology, chemical data, effect profiles, and more
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Helpful Links
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Import this file as custom substances
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Name
Tetrazepam
Unit
mg
Description
Tetrazepam Source: SubstanceSearch (substancesearch.com) Oral dose (mg): light 25-50 · common 50-100 · strong 100-200 · heavy 200+ Oral duration: onset 15-35m · peak 6-10h · after-effects 1-12h 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 ~ 75 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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