MDD can affect anyone regardless of age, and it often starts during late teens or early adulthood. Although some patients with MDD have an adequate response to medications, only approximately 50% respond to the first treatment, and approximately 30% do not achieve remission despite multiple interventions. Several strategies exist for treating patients who have failed multiple first-line agents,...
Dextromethorphan (DXM), an N-methyl-D-aspartate receptor antagonist, may have ketamine-like antidepressant effects. Dextromethorphan is extensively metabolized via cytochrome P450 (CYP) 2D6, and its half-life in extensive metabolizers is 2 to 4 hours. The purpose of this study was to evaluate the effects of DXM in combination with a moderate-to-strong CYP2D6 inhibitor antidepressant on...