Safety and Efficacy Study of Suvorexant in Participants With Primary Insomnia - Study A (MK-4305-028)
Status:
Completed
Trial end date:
2011-12-07
Target enrollment:
Participant gender:
Summary
This is a multicenter study to test the hypothesis that suvorexant (MK-4305) is superior to
placebo in improving insomnia as measured by change from baseline in: subjective total sleep
time and time to sleep onset, wake time after persistent sleep onset, and latency to onset of
persistent sleep. Participants who complete the initial 3-month Treatment (TRT) Phase may
participate in an optional 3-month Extension (EXT) Phase.