Not yet reviewed — this article is pending editorial review by Lyrea.
Citation noticeOur citation system is being overhauled
References and citation markers may currently be incomplete, mismatched, or incorrect. This system is being rebuilt and reviewed before the full site launch.
Tetrazepam
Tetrazepam is a benzodiazepine derivative with anticonvulsant, anxiolytic, muscle relaxant, and mildly hypnotic properties. It was used primarily in Austria, France, Belgium, Germany, and Spain to treat muscle spasm and anxiety disorders such as panic attacks. Tetrazepam produces relatively little sedation at low doses while retaining muscle relaxant and anxiolytic effects, and has been described as more euphoric than comparable benzodiazepines. European marketing authorisations were suspended in 2013 over cutaneous toxicity and allergic reactions.
Dosage & Duration
Dosage
Doses are population estimates that vary widely between individuals.
The indicated adult therapeutic dose for muscle spasm is 25 mg to 150 mg per day, increased if necessary to a maximum of 300 mg per day, in divided doses; it is not generally recommended for children except on specialist advice. Tetrazepam is only available in one strength and formulation, 50 mg tablets. Benzodiazepine equivalence: approximately 100 mg of tetrazepam = 10 mg of diazepam. It has relatively little sedative effect at low doses while still producing useful muscle relaxation and anxiety relief. Peak plasma levels are reached in less than 2 hours, and it is an intermediate-acting benzodiazepine with an elimination half-life of approximately 15 hours.
Duration
Subjective Effects
Legacy content. A statistically backed ontology from Mindstate Design Labs is coming soon.
Tetrazepam is a benzodiazepine used therapeutically as a muscle relaxant, with anticonvulsant, anxiolytic and mildly hypnotic properties. It produces relatively little sedation at low doses while still relieving muscle spasm and anxiety, and its hypnotic effects are reduced compared to other benzodiazepines. It has nonetheless been described as more euphoric than comparable compounds, and is sometimes taken to reach a state of intoxication.
Physical
Muscle relaxation is the defining physical effect, accompanied by drowsiness as a common side effect and, in some cases, a reduction in muscle force or marked muscle weakness.
Sedation
Cognitive
The mental effects centre on relief of anxiety, with euphoria reported more prominently than with similar benzodiazepines.
Emotional
Pharmacology
Pharmacodynamics
Tetrazepam is a benzodiazepine derivative with anticonvulsant, anxiolytic, muscle relaxant and slightly hypnotic properties, producing useful muscle relaxation and anxiety relief with relatively little sedation at low doses. Its structure is unusual for the class in that a cyclohexenyl group replaces the 5-phenyl moiety found in other benzodiazepines. Approximately 100 mg of tetrazepam is considered equivalent to 10 mg of diazepam.
Pharmacokinetics
Tetrazepam is rapidly absorbed following oral administration, within roughly 45 minutes.
Interactions
An unlisted combination is an unknown one, not a safe one. Check a dedicated combination chart before mixing.
Tolerance
Harm Potential
History & Culture
Tetrazepam was marketed under a range of brand names including Clinoxan, Epsipam, Myolastan, Musaril, Relaxam and Spasmorelax, and was used mainly in Austria, France, Belgium, Germany and Spain. Its principal medical application was the treatment of muscle spasm, though it was also prescribed for…
Legality
Article Status
Step 1 · Automated synthesisAn autonomous workflow built by Josie Kins compiled this article's foundation from information published across the web.
- Step 2 · First-pass reviewPending
Not yet reviewed — this article is pending editorial review by Lyrea.
- Step 3 · Citation reviewPending
No one has reviewed this article's citations yet. That second pass checks each claim against the source it cites.
Recent changes7 human edits · latest
Times are UTCNewest first
24 January 2026
Josie Kins · Updated the article · also 1,4-Butanediol, 1B-LSD, 1cP-AL-LAD and 573 more
Josie Kins · Updated the article · also 1,4-Butanediol, 1B-LSD, 1cP-AL-LAD and 573 more
Josie Kins · Updated the article · also 1,4-Butanediol, 1B-LSD, 1cP-AL-LAD and 573 more
Josie Kins · Updated the article · also 1,4-Butanediol, 1B-LSD, 1cP-AL-LAD and 573 more
Josie Kins · Updated the article · also 1,4-Butanediol, 1B-LSD, 1cP-AL-LAD and 573 more
Josie Kins · Updated the article · also 1,4-Butanediol, 1B-LSD, 1cP-AL-LAD and 573 more
Josie Kins · Updated the article · also 1,4-Butanediol, 1B-LSD, 1cP-AL-LAD and 573 more
Suggest an edit
Spotted a mistake, an outdated claim, or something missing from the Tetrazepam article? Send the editors a private note. Feedback lands in a moderation queue and is never shown on the site.
Wish to give generalised feedback? You can do so here.