Overview Sleep Laboratory Study of MK0928 in Adult Patients With Primary Insomnia (0928-041)(TERMINATED) Status: Terminated Trial end date: 1969-12-31 Target enrollment: Participant gender: Summary A study to evaluate the efficacy, safety and tolerability of MK-0928 in Primary Insomnia. Phase: Phase 2 Details Lead Sponsor: H. Lundbeck A/STreatments: Gaboxadol