Suburban Research Associates is seeking participants between 18-65 years old living with bipolar I or II disorder and experiencing depressive episodes. This study is about 10 weeks (about 2 and a half months) long and includes seven (7) appointments at our office in Media, PA and three (3) in-home phone calls. The study’s purpose is to evaluate the effectiveness of an investigational medication compared to placebo for the treatment of depressive episodes associated with bipolar I or II disorder.