Correcting Circadian Rhythms to Breakthrough in Bipolar Disorder

Participants randomized to this intervention will take 1 oral pill (0.5 milligrams (mg)) daily. They will attend 4 weekly behavioral sleep intervention sessions with a therapist. In addition, participants will complete questionnaires (MyDataHelp app), monitor sleep, collect saliva samples, and wear the Fitbit Device.

Participants randomized to this intervention will take 1 oral placebo pill daily. They will attend 4 weekly behavioral sleep control sessions with a therapist. In addition, participants will complete questionnaires (MyDataHelp app), monitor sleep, collect saliva samples, and wear the Fitbit Device.

An active intervention that is typically paired with melatonin to maximize treatment effects.

A behavioral placebo (which does not improve sleep in delayed sleep-wake phase disorder) to control for social/interpersonal effects of behavioral sleep intervention sessions.