News FDA approves first postpartum depression drug. It works quickly but costs over $20K, report says March 19, 2019Joel Shannon, USA TODAYComments Off on FDA approves first postpartum depression drug. It works quickly but costs over $20K, report says Brexanolone, sold as Zulresso, is delivered as a continuous IV infusion over 60 hours. It reportedly works quickly and costs $20,000 or more.