A 10 Week Open-Label Pilot Study to Evaluate the Effectiveness and Safety of Memantine(Namenda) as Augmentation Therapy in Patients With Generalized Anxiety Disorder

A 10 Week Open-Label Pilot Study to Evaluate the Effectiveness and Safety of Memantine(Namenda) as Augmentation Therapy in Patients With Generalized Anxiety Disorder (GAD) or Social Anxiety Disorder (SAD), Who Are Only Partial Responders to Selective Serotonin-Norepinephrine Reuptake Inhibitors (SNRI's) or Selective Serotonin Reuptake Inhibitors (SSRI's).