Overview A Double-blind, Group-comparison P-III Study With Zolpidem MR Using Placebo and Nitrazepam in Insomnia Patients Status: Completed Trial end date: 2008-06-01 Target enrollment: Participant gender: Summary A multicenter, randomized, double-blind, triple-dummy, group-comparison study using placebo and nitrazepam as a comparative drug. Phase: Phase 3 Details Lead Sponsor: Astellas Pharma IncTreatments: NitrazepamZolpidem