Clinical Neuropsychopharmacology and Therapeutics
Online ISSN : 1884-8826
ISSN-L : 1884-8826
Original Contribution
Efficacy of Olanzapine for Treating Depressive Episodes in Bipolar Disorder
Eiji Kirino
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2014 Volume 5 Pages 11-17


Purpose: We administered olanzapine to 24 outpatients with bipolar disorder who had experienced a depressive or mixed episode as their most recent episode to evaluate the efficacy and safety of olanzapine in clinical practice.
Methods: The duration of study treatment was 8 weeks. Symptoms in each subject were assessed using the Montgomery Åsberg Depression Rating Scale (MADRS) and the Clinical Global Impressions-Severity of Illness, Bipolar Version (CGI-BP) at the start of treatment with olanzapine and at Week 4 and Week 8 of treatment.
Results: A total of 17 subjects underwent the assessments at Week 4, and 13 subjects completed the 8-week treatment regimen and the assessments at Week 8. The mean total score and each individual item score of the MADRS were significantly improved at Week 4 and Week 8 compared to those at the start of treatment. The mean CGI-BP Depression and CGI-BP Overall scores were significantly improved at Week 4 and Week 8, while the mean CGI-BP Mania score was not significantly different at Week 4 or Week 8 compared to that at the start of treatment. Adverse drug reactions were reported in 3 subjects during the study: hyperphagia in 2 subjects and light-headed feeling in 1 subject. No manic switches were observed.
Discussion: The results of this study confirmed the efficacy and safety of olanzapine in outpatients with bipolar depression in clinical practice.

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© 2014 The Japanese Society of Clinical Neuropsychopharmacology
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