The main purpose of this study is to determine if treatment with SAGE-217 reduces depressive symptoms in adults with severe postpartum depression (PPD). SAGE-217 is is an investigational drug, which means that it is not yet approved to treat PPD. Participation in the study will last up to 76 days and includes a 14 day treatment period where SAGE-217 is taken by oral pill daily. Visits will take approximately 1 to 3 hours.

This is an open-label study designed to investigate the feasibility and tolerability of a novel TMS treatment protocol to treat depression in women with post-partum depression. It is known that TMS can effectively treat depression. The FDA approved protocol lasts 6 weeks and is not feasible for many women with post-partum depression. We are investigating a 3 day treatment for depression which may be more acceptable for this population. We further hope to characterize the ant-depressant effect of this protocol in order to design a larger trial.