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 ...

Guaifenesin is the active ingredient ... Like DayQuil, NyQuil contains the analgesic acetaminophen and the cough suppressant ...

DXM or Dextromethorphan ... the medicine cupboard and just grab the whole bottle. No one really suspects anything even if there are people around. It would be like, "Oh yeah he needs some cough ...