Dextromethorphan-bupropion (Auvelity) for the Treatment of Major Depressive Disorder (2023)

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10591164/

See also 

Playing with a full dex of cards: Treatment resistant depression with suicidality responds to inpatient dextromethorphan therapy

https://www.sciencedirect.com/science/article/pii/S2773021223000032