Overview Long-Term Efficacy of Ramelteon on Endocrine Function in Adult Subjects With Chronic Insomnia Status: Completed Trial end date: 2004-07-01 Target enrollment: Participant gender: Summary The purpose of this study is to determine the long-term effects of Ramelteon, once daily (QD), on endocrine function values. Phase: Phase 3 Details Lead Sponsor: Takeda