A Study of Abilify® Tablet(Aripiprazole) as an Adjunctive Treatment in the Bipolar Depression

This is an 8-week, multicenter, randomized, double blind, placebo controlled study to evaluate the efficacy and safety of aripiprazole as an adjunctive treatment with mood stabilizer for the treatment of patients (outpatients or inpatients) with type I or II bipolar disorder accompanied by major depressive episode, without any psychotropic features. This study involves patients who are considered by the investigator not to have a proper improvement, despite receiving a mood stabilizer (lithium or valproic acid) for a sufficient (≥ 28 days) period of time during the current depressive episode.