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 ...
But there are specific kinds that are best: “Cough medicines that contain guaifenesin and dextromethorphan should be okay for a short time,” says Meleen Chuang, MD, the chief of obstetrics and ...
Robitussin ($12): This medicine has both dextromethorphan and guaifenesin to thin mucus and relieve cough. Just make sure you are buying the type that doesn’t have pseudoephedrine. 2.