Repeat Ketamine Infusions Found to Have Cumulative, Sustained Antidepressant Effects

One of the first studies to directly compare response rates of single to multiple ketamine infusions along with evaluating maintenance dosing for treatment-resistant depression. Multiple infusions proved to be more efficacious than a sole infusion and once a week maintenance infusions in weeks 4 thru 7 preserved the antidepressant effects achieved by the multiple infusions in the first two weeks.