The study, which will last up to 16 weeks, will compare the effectiveness of the active investigational medicine given at different dose levels with psychological support. If you join the study, neither you nor your study doctors will know which study treatment you are going to receive because the decision is made randomly by a computer and not revealed to anyone.

Participants will receive support from study clinicians to help them taper off any prohibited medications, including current antidepressants. Participants will be asked to remain off prohibited medications for the duration of the study.
Reimbursement for reasonable, out-of-pocket expenses for travel and other expenses may be available to qualified individuals.