Conditions: Major Depressive Disorder
Keywords: Major Depressive Disorder MDD
Allocation: RANDOMIZED | Intervention model: PARALLEL
Enrollment: 338
Healthy volunteers: no

Brief summary:
The primary purpose of this study is to evaluate whether treatment with (SEROQUEL SR) quetiapine fumarate sustained release (SR) for 9 weeks compared to placebo will improve depressive symptoms in elderly patients with major depressive disorder.

PLEASE NOTE: Seroquel SR and Seroquel XR refer to the same formulation. The SR designation was changed to XR after consultation with FDA.

Detailed description:

Arms:

Interventions: intervention 1: Quetiapine
Intervention descriptions: intervention 1: None

Protocol document: