10002063 J Clin Psychiatry / Document Archive

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The article you requested is

Prior Benzodiazepine Exposure and Benzodiazepine Treatment Outcome.

J Clin Psychiatry 2000;61:409-413
Copyright 2000 Physicians Postgraduate Press, Inc.

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Background: We examined discontinuation symptoms following brief benzodiazepine therapy (8 weeks) and intermittent benzodiazepine therapy (2 weeks with at least 2 weeks without drug) and associations with prior benzodiazepine use. The hypothesis was that prior benzodiazepine use would predispose patients to more severe discontinuation symptoms.

Method: Data were drawn from 3 double-blind, randomized, placebo-controlled, published treatment trials: alprazolam for patients with premenstrual syndrome (PMS) and diazepam and lorazepam for patients with generalized anxiety disorder (GAD). The PMS group provided prospective daily symptom ratings, which allowed ongoing investigation of effects of prior treatment. In the GAD groups, taper outcome was examined after 8 weeks of benzodiazepine therapy as a function of prior benzodiazepine use and as a function of time since last prior benzodiazepine use. Symptom scores were analyzed using t statistics in the PMS group and analysis of covariance with 8-week scores as the covariate in the GAD groups.

Results: The PMS subjects reported no increase in symptom scores and no significant difference from placebo-treated subjects during taper and discontinuation of alprazolam in the follicular phase of each treatment cycle. In the GAD trials, the results of treatment discontinuation did not differ significantly as a function of presence or absence of prior benzodiazepine use or as a function of time since last benzodiazepine use.

Conclusion: These preliminary data fail to support the hypothesis that prior benzodiazepine use predisposes patients to more severe discontinuation symptoms when treatment is brief and doses are low.