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Diclazepam is a designer benzodiazepine closely related to diazepam (Valium), essentially a chlorinated version of it. It enhances GABA at the GABA-A receptor to produce sedation, anxiety relief and muscle relaxation, and it is fairly long-acting. As a research chemical it has little human data but shares all the familiar benzodiazepine hazards of dependence, dangerous depressant synergy and hard withdrawal.
- Anxiety relief
- Sedation and calm
- Muscle relaxation
- Long duration and accumulation
- Drowsiness and impaired coordination
- Amnesia
- Tolerance, dependence and seizure-risk withdrawal
Mechanism
Diclazepam is a positive modulator at the benzodiazepine site of the -A receptor, increasing the frequency of chloride-channel opening in response to GABA and broadly dampening neural activity. It is metabolized into active benzodiazepines including delorazepam and lorazepam-type metabolites, which extends and reshapes its effects and contributes to its long overall duration.
receptor fingerprint
-A receptor (benzodiazepine site)Positive allosteric modulator
Safetyrisks and cautions, not medical advice
The central danger is stacking diclazepam with opioids or alcohol, which compound respiratory depression and can be fatal. Its long duration and active metabolites mean it lingers and accumulates, so repeated dosing can pile up into heavy sedation. Regular use causes tolerance and dependence, and stopping abruptly can produce a dangerous withdrawal including seizures, so it must be tapered. Not medical advice.
Subjective profileweighing the evidence above
Every benzodiazepine hazard with none of the medical guardrails. It accumulates through active metabolites, builds dependence quickly, and abrupt withdrawal can bring seizures; combining it with opioids or alcohol is how people die, and there is almost no human data to bound any of it.
Resources
This entry is here for reference.
Research
- 1.Designer Benzodiazepines: A Review of Toxicology and Public Health Risks
- 2.Metabolic interactions of benzodiazepines with oxycodone ex vivo and toxicity depending on usage patterns in an animal model
2 listed here; entry last updated July 2026
Reviews
My notesprivate to this device
FAQ
How is diclazepam related to Valium?
It is a chlorinated analog of diazepam (Valium) and works the same way on the GABA-A receptor, with a similarly long, drawn-out effect.
Why does it last so long?
It has a long half-life and breaks down into active benzodiazepine metabolites, so its effects continue and can build up with repeat dosing.
Is it a licensed medicine?
No. It is a designer benzodiazepine with no approved medical use and limited safety data.
Adverse effects
- Long duration and accumulation
- Drowsiness and impaired coordination
- Amnesia
- Tolerance, dependence and seizure-risk withdrawal