Overview A Dose-ranging, Multicenter Polysomnography Trial of PD 0200390 in Adults With Primary Insomnia Status: Completed Trial end date: 2008-01-01 Target enrollment: Participant gender: Summary The purpose of this study is to further explore an effective dose range of PD0200390 for the treatment of patients with insomnia. Phase: Phase 2 Details Lead Sponsor: Pfizer