Suvorexant

Suvorexant (MK-4305) is a dual orexin receptor antagonist currently under clinical investigation as a novel therapy for insomnia. Suvorexant is not currently approved for commercial use, but it has completed three Phase III trials. The recent FDA review showed that Suvorexant (MK-4305) is associated with increased somnolence the next day and users of higher doses had an increased rate of suicidal ideation. Suvorexant works by turning off wakefulness rather than by inducing sleep.