Overview Efficacy and Safety of ACT-541468 in Adult Subjects With Insomnia Disorder Status: Completed Trial end date: 2017-06-20 Target enrollment: Participant gender: Summary This study evaluates the dose response of ACT-541468 on the change of WASO from baseline to Days 1 and 2, assessed by PSG. Phase: Phase 2 Details Lead Sponsor: ActelionIdorsia Pharmaceuticals Ltd.Treatments: Zolpidem