Adinazolam, diazepam, imipramine, and placebo in major depressive disorder: a controlled study

Abstract

In summary, the clinical results of this double-blind study clearly show that imipramine, as expected, demonstrated significant antidepressive properties in outpatients suffering from major depressive disorders. In contrast, adinazolam showed rather mild and weak antidepressive properties, and in no measures did its response differ significantly from that of diazepam. These findings are quite in contrast to those obtained by the authors in an earlier study with alprazolam (Rickels et al., 1987) in which alprazolam and imipramine produced rather similar results and both were significantly better than placebo, while diazepam was not. While the rather high dropout rate may well be considered a limitation of the study, the dropout rate is equally distributed between all four treatments. And since both decreasing sample size and endpoint analyses which include all patients with at least one week data, provide rather similar results, the findings can be considered as robust despite the high dropout rate. While the authors consider those findings the most robust in which endpoint and completer analyses results are rather similar, when high dropout rates occur, endpoint analyses should be given more weight than completer analyses as they are more representative of actual clinical practice. The present findings therefore suggest that adinazolam clearly possesses less antidepressive properties than imipramine and not more than diazepam and these findings are in agreement with other studies which found lack of significant antidepressant activity for such benzodiazepines as diazepam (Covi et al., 1974) and chlordiazepoxide (Lipman et al., 1986). The presence of only borderline antidepressive effects combined with rebound symptoms occurring already after only 6 weeks of therapy does not recommend adinazolam for use in depression.(ABSTRACT TRUNCATED AT 250 WORDS)