MARLBOROUGH, Mass.--(BUSINESS WIRE)--Sepracor Inc. (Nasdaq: SEPR) today announced the publication of a study of LUNESTA tablets in patients with insomnia and co-morbid generalized anxiety disorder (GAD) in the May issue of the Archives of General Psychiatry. This 595-patient study examined the safety and efficacy of LUNESTA co-administered with escitalopram oxalate, which is commonly used in the treatment of anxiety, versus co-administration of escitalopram and placebo in patients with insomnia and co-existing GAD. The study also evaluated the potential for co-administration of LUNESTA to increase the magnitude and/or accelerate the anxiolytic response versus escitalopram alone.