It was developed in 1974 in Russia to treat neurological disorders such as epilepsy and insomnia. Phenazepam, sometimes spelled as Fenazepam, is a benzodiazepine medication similar but much more potent than other benzodiazepines such as Diazepam, Oxazepam, and Temazepam. Most patients and victims were young individuals of both sexes, often with a previous history of substance abuse and mental illness. Acute intoxications and deaths related to DBZD, alone or in combination with other drugs of abuse, were reported in Finland, Germany, Japan, Norway, Poland, Sweden, UK and USA.
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Because of this, these drugs are prescribed to treat anxiety, insomnia, panic and seizure disorders, and symptoms of alcohol withdrawal. The same actions that make these medications valuable within treatment also entice drug users. The half-life of clonazolam is thought to be around 3.6 h and it is extensively metabolized and is mainly excreted as its amino and acetamino metabolites 86. The main metabolites are 7-amnoclonazolam, hydroxyclonazolam, and 7-acetamindoclonazolam. As with all benzodiazepines, clonazolam acts as a GABA receptor agonist, increasing the time that chloride channels are open 70.
The Alprazolam triazolobenzophenone derivative represents a product of hydrolysis, under acidic conditions, of alprazolam and, hence, a metabolite of alprazolam as well. It was firstly developed by the Upjohn Company in the 1980s as a water-soluble pro-drug of alprazolam for the parenteral (intravenous or intramuscular) ROA 78. Alprazolam triazolobenzophenone is not currently controlled under the 1971 United Nations Convention on Psychotropic Substances or the 1961 Single Convention on Narcotic Drugs. In addition to these drugs and substances, phenazepam should not be combined with other benzodiazepines due to the increased risk of respiratory depression. Examples of other benzodiazepines include diazepam (Valium), clonazepam (Klonopin), and alprazolam (Xanax).
Subjects were aged between 30 and 39 years; sex was not specified, and diclazepam was found in blood at concentration ranging from 5.4 ng/mL to 32 ng/mL 86. The only death reported involved a young man with a history of methamphetamine use found deceased at home. Retrospective quantitative analysis revealed the presence of diclazepam and flubromazolam, along with opioids and stimulants. In addition, in 2013, a French patient was admitted to the ED after ingestion of two pills labelled “diclazepam” and “2-aminoindane” bought on the Internet. Upon clinical examination, the patient was anxious, but the anxiety resolved, and the patient was discharged the same day 130. Nitrazolam was first identified in a sample of light brown powder on the 20 October 2015 by the Medical Centre, Institute of Forensic Medicine at the University of Freiburg, Germany.
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For the two following days, he was unable to eat solid food, but he drank a lot of fluids and continued taking his Warfarin. One day later, when he woke up, he had a lot of blood in his urine and his stools were bright red. She should have taken the anti-inflammatory drug for only a short time (one week). She should have taken it on a full stomach with additional anti-ulcer medication to prevent stomach ulcers, especially if she had needed an extra week of treatment. Alice had right knee pain and took over-the-counter Naproxen (Aleve)—two tablets, twice a day for two months.
- When the drug is administered into a vein, the “lethal” dose is 10 ml.
- You should know that the breakdown products of Phenazepam are eliminated from the body within a week.
- Amnesiac, but not a huge degree … closer to etizolam than alprazolam” 116.
- When a physically-dependent person quits benzodiazepines, withdrawal can set in.
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Phenazepam is prescribed for this therapy to cover the antidepressant. In this case, it does not treat anything, but only temporarily relieves the symptoms of the disease and the side effects caused by Amitriptyline – various fears, anxiety, etc. When taking Phenazepam simultaneously with drugs from other groups, the active ingredients may interact chemically. The result of the reaction is a change in the effectiveness of drugs and worsening side effects.
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- In addition, a subject was found unconscious next to a syringe of heroin.
- Phenazepam has a half-life of up to 60 hours because it’s a long-acting benzodiazepine.7 The drug can potentially delay the onset of withdrawal symptoms for up to five days.
- 3-Hydroxyphenazepam was identified in a seized white tablet and reported in October 2016 by Denmark.
- Metizolam is a thienodiazepine, structurally similar to etizolam, from which it differs by only a methyl ring in the thiophene moiety 117.
- In epilepsy, the part is 2-10 mg Exactly when alcohol restriction Phenazepam supported in a bit of 2.5-5 mg In afflictions with extended muscle tone the prescription is supported 2-3 mg 1-2 times every day.
A treatment program that works for you may not work for someone else. The early signs of addiction can be difficult to distinguish from general side effects. Because of this, talking to your doctor when you experience side effects is important. When illegally obtained, it’s often combined with other drugs, like synthetic cannabinoid products. Phenazepam can also have a more neutralizing effect with stimulants such as cocaine.
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The data in this study prove concerning, as it suggests that DBZs require a higher dose to be detected than it does to cause significant impairment. The concept that DBZ use can go undetected raises a red flag regarding public safety. Thus, this study should prompt further research into DBZs and their pharmacological effects so that regulations and standards can be set to manage, monitor, and discourage their use 106.
Deschloroetizolam is not currently controlled under the 1971 United Nations Convention on Psychotropic Substances or the 1961 Single Convention on Narcotic Drugs. Phenazepam is currently controlled under the 1971 United Nations Convention on Psychotropic Substances or the 1961 Single Convention on Narcotic Drugs. Phenazepam is controlled in Estonia, Latvia, Lithuania, Moldova, Norway, Sweden, and the Republic of Ireland 16, 20-22.

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Adinazolam was first identified in a sample of 1 gram of white powder collected by the Medical Centre in the Institute of Forensic Medicine at the University of Freiburg (Germany) on 5 September 2015. The substance was analytically confirmed by GC-MS analysis 70, 109. A seizure of 105 tablets was reported shortly afterwards (8 September 2015) by the Swedish Focal point, following a seizure by the Swedish police in Gottenburg. The tablets were white in colour with the markings “D/CD” and weighed 0.35 grams on average. Moreover, the Swedish Poison Control Centre/STRIDA project reported a positive detection for adinazolam related to a hospital inquiry where an individual had taken “Xanor 2.0” (i.e., brand name for Xanax® in Sweden) 109.
Heide et al. reported one additional DUID of a young driver submitted for CTI 86 who also had a phenazepam blood concentration of 120 ng/mL. Of sixty deaths reported, phenazepam alone was listed as the sole cause of death in two cases, while the remaining were attributed to accidental overdose due to polydrug toxicity. Diclazepam, or 2-Chlorodiazepam, is the 2’-chloro derivative of diazepam and the positional isomer of 4-chlorodiazepam 84.
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At high doses, delirium and psychosis-like behaviour have been reported 46. Phenazepam and its active metabolite are both GABAA receptor positive allosteric modulators 47, 48. The main routes of administration (ROA) reported include orally (most common), snorted, inhaled, administered transdermal or rectally, or injected (after crushing the tablet) 53. As tranquilizers, benzodiazepines have a wide range of clinical uses. Recently, there has been a significant rise in the number of novel psychoactive substances, including designer benzodiazepines.
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In particular, a light dose is 1-2 mg, a typical dose is 2-3 mg, and a high dose is 3-4 mg 58. The onset of symptomatology occurs in minutes, and effects may last 5-8 hours and after-effects for 1-12 hours 58. Etizolam was first reported to the EMCDDA by the UK’s Hampshire police in September 2011 in a seizure of tablets bought on line. Subsequently, powders, as well as ‘blotters’ (similar to LSD paper doses) were reported 21. There are several anecdotal reports from psychonaut fora which describe it with a “high potency which allows an effective dose of a few milligrams to be present on a paper dose (…)” 52; 54.
Counterfeit Xanax (alprazolam) and erimin-5 (nimetazepam) tablets containing etizolam, flualprazolam and phenazepam were also seized in the United States (US), Australia, Singapore and Malaysia 30,55,56. Flualprazolam was first identified in 89.8 grams of pale beige powder seized by Swedish police in Linköping on 29 November 2017. The substance was analytically confirmed using GC-MS, LC-HRMS and NMR by the Swedish National Forensic Centre 11. It was also identified in 1 gram of yellow powder, collected by the Slovenian National Forensic Laboratory in Ljubljana, purchased from the Internet, as part of the RESPONSE 2 project and was received on 3 January 2018. The price was 129 US dollars per 1 gram and the sample was advertised as flualprazolam. The substance was analytically confirmed using GC-MS, HPLC-TOF, IC, FTIR-ATR, GC-(MS)-IR condensed phase at the Slovenian National Forensic Laboratory and by NMR at the Faculty of Chemistry and Chemical technology, University of Ljubljana 10.
Phenazepam has been reported as approximately five times stronger than Valium (another well known tranquilliser), so it is easy to take too much and overdose. Phenazepam is not used in the UK as a medicine, but it is used in Russia to treat epilepsy and neurological disorders. Phenazepam was previously sold and marketed as a ‘legal high’ or as fake Valium. Phenazepam is used in Russia for the treatment of neurological disorders such as epilepsy, alcohol withdrawal symptoms and insomnia.