Overview A Study to Evaluate the Safety and Efficacy of TS-091 in Patients With Narcolepsy Status: Completed Trial end date: 2019-08-08 Target enrollment: Participant gender: Summary The purpose of this study is to investigate the efficacy and safety after administration of TS-091 compared with placebo in patients with narcolepsy. Phase: Phase 2 Details Lead Sponsor: Taisho Pharmaceutical Co., Ltd.