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Systematic (IUPAC) name
5-phenyl- 3,5a,6,7,8,9-hexahydro- 2H-[1]benzothieno[2,3-e] [1,4]diazepin- 2-one
Clinical data
  •  ?
Routes of
Legal status
Legal status
Pharmacokinetic data
Bioavailability ?
Metabolism Hepatic
Excretion Renal
CAS Number 29462-18-8
ATC code none
PubChem CID 34592
ChemSpider 11248641
Chemical data
Formula C17H16N2OS
Molar mass 296.387 g/mol[[Script error: No such module "String".]]
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Bentazepam (also known as thiadipone) is a drug which is a benzodiazepine analog.[1] It possesses anxiolytic, anticonvulsant, sedative and skeletal muscle relaxant properties. Peak plasma rates are achieved in around two and a half hours after oral administration.[2] The elimination half life is between approximately 2 – 4 hours.[1][3] Bentazepam is effective as an anxiolytic. A severe benzodiazepine overdose with betazepam may result in coma and respiratory failure.[4] Adverse effects include dry mouth, somnolence, asthenia, dyspepsia, constipation, nausea.[5] and Drug-induced lymphocytic colitis has been associated with bentazepam.[6][7] Severe liver damage and hepatitis has also been associated with bentazepam.[8][9][10] Whilst liver failure from bentazepam is considered to be rare, liver function monitoring has been recommended for all patients taking bentazepam.[11]

See also


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it:Bentazepam pt:Bentazepam
  1. 1.0 1.1 Gonzalez López, F; Mariño, EL; Dominguez-Gil, A (1986). "Pharmacokinetics of tiadipone: a new anxiolytic". International journal of clinical pharmacology, therapy, and toxicology. 24 (9): 482–4. PMID 2877954. 
  2. Mariño, EL; Fernandez Lastra, C; Gonzalez Lopez, F; Dominguez-Gil, A; Garcia Santalla, JL; Vorca, G; Izquierdo, JA; Ledesma-Jimeno, A (1987). "Parametrization by non-linear regression and bayesian estimation of bentazepam in a multiple dosage regimen in humans". International journal of clinical pharmacology, therapy, and toxicology. 25 (11): 627–32. PMID 3429066. 
  3. Colino, CI; Lastra, CF; López, FG; Ledesma, A; Mariño, EL (1991). "Open-loop feedback control of serum bentazepam concentrations and Bayesian estimation in multiple dosage regimens in patients". International journal of clinical pharmacology, therapy, and toxicology. 29 (11): 457–62. PMID 1800395. 
  4. Rivas López, FA; López Soriano, F; Mendoza Cerezo, A; Jiménez Ferré, J; Azurmendi Rodríguez, JI; De La Rubia Nieto (1989). "Mixed benzodiazepine poisoning and reversal with flumazenil (Ro 15-1788)". Revista espanola de anestesiologia y reanimacion. 36 (1): 48–50. PMID 2565591. 
  5. Honorato, J; Rubio, A; Tristán, C; Otero, FJ; Garrido, J (1990). "A pharmacovigilance study with bentazepam in a sample of 1046 psychiatric outpatients". Revista de medicina de la Universidad de Navarra. 34 (2): 80–8. PMID 1983365. 
  6. Fernández-Bañares, F; Salas, A; Esteve, M; Espinós, J; Forné, M; Viver, JM (2003). "Collagenous and lymphocytic colitis. evaluation of clinical and histological features, response to treatment, and long-term follow-up". The American journal of gastroenterology. 98 (2): 340–7. doi:10.1111/j.1572-0241.2003.07225.x. PMID 12591052. 
  7. De-La-Serna, C; Gil-Grande, LA; Sanromán, AL; Gonzalez, M; Ruiz-Del-Arbol, L; Garcia Plaza, A (1997). "Bentazepam-induced hepatic bridging necrosis". Journal of clinical gastroenterology. 25 (4): 710–1. doi:10.1097/00004836-199712000-00042. PMID 9451703. 
  8. Andrade, RJ; Lucena, MI; Kaplowitz, N; García-Muņoz, B; Borraz, Y; Pachkoria, K; García-Cortés, M; Fernández, MC; Pelaez, G (2006). "Outcome of acute idiosyncratic drug-induced liver injury: Long-term follow-up in a hepatotoxicity registry". Hepatology (Baltimore, Md.). 44 (6): 1581–8. doi:10.1002/hep.21424. PMID 17133470. 
  9. Tuca, Albert (2003). "Utilidad cl�nica del acetato de megestrol para la ganancia de peso en los enfermos con neoplasia y caquexia". Medicina Cl�nica (in Spanish). 120 (17): 678. doi:10.1157/13047309.  replacement character in |title= at position 12 (help); replacement character in |journal= at position 12 (help)
  10. Andrade, RJ; Lucena, MI; Alcantara, R; Fraile, JM (1994). "Bentazepam-associated chronic liver disease". Lancet. 343 (8901): 860. doi:10.1016/S0140-6736(94)92065-6. PMID 7908109. 
  11. Andrade, RJ; Lucena, MI; Aguilar, J; Lazo, MD; Camargo, R; Moreno, P; García-Escaño, MD; Marquez, A; Alcántara, R (2000). "Chronic liver injury related to use of bentazepam: an unusual instance of benzodiazepine hepatotoxicity". Digestive diseases and sciences. 45 (7): 1400–4. doi:10.1023/A:1005520523502. PMID 10961721.