An International, Multicenter, Randomized, Double-Blind, Parallel-Group, Placebo-Controlled, Active-Controlled Study of the Efficacy and Safety of Sustained-Release Quetiapine Fumarate (Seroquel SR™ ) in the Treatment of Generalized Anxiety Disorder (SILVER)

The primary purpose of this study is to evaluate the efficacy of (SEROQUEL SR™ ) quetiapine fumarate sustained-release (SR) compared to placebo in the treatment of anxiety symptoms in patients with generalized anxiety disorder (GAD). PLEASE NOTE: Seroquel SR and Seroquel XR refer to the same formulation. The SR designation was changed to XR after consultation with FDA.