<qa>  What is the study of eszopiclone?Research has established the incidence of insomnia increases with age and the possible causes contributing to sleep problems in the elderly are still being explored and debated. Older adults use a disproportionately large share of sleep aids with non-prescription sleep aid use having increased over the past decade. This study is a double blind safety and effectiveness trial examining the response of eszopiclone co-administered with escitalopram for the treatment of insomnia symptoms in geriatric depressed adults with insomnia symptoms. 