17.3 million adults in the United States have experienced at least one depressive episode.Currently, the gold standard for treating MDD is psychotherapy or antidepressant medication.
A 2014 study in World Psychiatry found that psychotherapy combined with antidepressants was more effective than the former alone.New antidepressants are ketamine-like drugs that show a high therapeutic response.
A 2014 meta-analysis in Psychopharmacology reports that roughly 0.5 milligrams per kilogram of ketamine effectively reduced depressive symptoms.