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The role of flumazenil in the treatment of benzodiazepine dependence: physiological and psychological profiles

School of Psychiatry and Clinical Neurosciences, University of Western Australia, Perth, Australia, sean.hood{at}uwa.edu.au

G O’Neil

Australian Medical Procedures Research Foundation, Perth, Australia

G Hulse

School of Psychiatry and Clinical Neurosciences, University of Western Australia, Perth, Australia

Abstract

Two-related studies are presented here, detailing our early experience with benzodiazepine-dependent patients treated with a four-day flumazenil infusion using a novel delivery technique. Patients with long-term benzodiazepine dependence who attended the Australian Medical Procedures Research Foundation (AMPRF, Perth, Australia) for treatment were recruited for these studies. Self-reported psychological and physical symptoms, as well as objective vital signs data were collected at intervals before, during and 2 weeks postinfusion. Study A is a case series with cardiovascular measures; study B is an open trial that tracks the psychological profiles of 13 subjects. Withdrawal symptoms were tracked, however, the nature and severity of these symptoms differed between patients. No major complications or discomfort prompting study dropout was observed. Significant benzodiazepine abstinence occurred with this flumazenil infusion method despite high levels of initial dependence, comorbid substance use and comorbid psychiatric illness. Low-dose flumazenil infusion appears to be a safe and effective treatment resulting in withdrawal symptoms of lesser severity than any other cessation method currently available. Recommendations for future research are discussed.

Key Words: benzodiazepine withdrawal • case series • comorbidity • flumazenil • infusion • naturalistic • safety

This version was published on June 1, 2009

Journal of Psychopharmacology, Vol. 23, No. 4, 401-409 (2009)
DOI: 10.1177/0269881108100322


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