Overview A Phase II/III Study of SEP-190 (Eszopiclone) in Patients With Primary Insomnia (Study 190-126) Status: Completed Trial end date: 2010-05-01 Target enrollment: Participant gender: Summary The purpose of this study is to investigate and evaluate the efficacy of Eszopiclone in Japanese participants with primary insomnia. Phase: Phase 2/Phase 3 Details Lead Sponsor: Eisai Co., Ltd.Treatments: EszopicloneZolpidem