Martinak B, Bolis RA, Black JR, Fargason RE, Birur B. Dextromethorphan in Cough Syrup: The Poor Man's Psychosis. Psychopharmacology Bulletin. 2017; 47(4):1-5 ...
Also, don't take cough syrup with multi-symptom products that contain dextromethorphan or guaifenesin. You may get a ...