Esketamine

Scientists used light to control the firing of specific cells to artificially create a rhythm in the brain that acted like the drug ketamine enjoynz/Getty Images hide caption

In 2019, the FDA approved Spravato for patients with major depressive disorder who hadn't responded to other treatments. Now, the agency is adding patients who are having suicidal thoughts or have recently attempted to harm themselves or take their own lives. Sarah Silbiger/Getty Images hide caption