R Robitussin Pediatric Cough & Cold CF (Dextromethorphan/Guaifenesin/Phenylephrine) by adhealth32 January 20, 2011 What is Robitussin Pediatric Cough & Cold CF (Dextromethorphan/Guaifenesin/Phenylephrine)? Dextromethorphan is a cough suppressant. It…