Overview Study Comparing the Tolerability of Seroquel IR With Seroquel XR in Patients With Bipolar Depression Status: Completed Trial end date: 2009-08-01 Target enrollment: Participant gender: Summary The purpose of the study is to compare the sedation profile one hour after dose administration between Seroquel IR and Seroquel XR. Phase: Phase 4 Details Lead Sponsor: AstraZenecaTreatments: Quetiapine Fumarate