The study is an interventional single site study using a double blind, randomized 3-way crossover design with Belsomra 10 mg and 20 mg compared to a placebo. The total number of enrolled patients proposed is 12. A cross-over design is utilized so participants will be exposed to all treatment conditions in a controlled order (Belsomra 10 mg, 20 mg and placebo). Both men and women with insomnia will be utilized as the study population to improve the generalizability of outcome data. Subjects with other sleep disorders or unstable medical/psychiatric disorders will be excluded from the trial. Inclusion criteria will be men and women >18 and < 65 years of age.