Johnson & Johnson has announced the FDA’s approval of a first-of-its-kind, esketamine nasal spray called Spravato for the standalone treatment of major depressive disorder (MDD), PTSD, and similar psychiatric conditions.

The U.S. Food and Drug Administration has approved a nasal spray to treat depression—the first-ever stand-alone medication for patients with severe depression. Johnson & Johnson said patients who use the nasal spray Spravato—which is made from the drug esketamine—may see improvements in depressive symptoms in as little as 24 hours.