title: Rx-to-OTC switches: two H2 antagonists.
authors.forename: S L
authors.initials: SL
authors.lastname: Chase
mesh_terms: D002927:Cimetidine / Q000627:therapeutic use*; D015738:Famotidine / Q000627:therapeutic use*; D006801:Humans; D004366:Nonprescription Drugs / Q000627:therapeutic use*; D010353:Patient Education as Topic
chemical_list: D004366:Nonprescription Drugs; D015738:Famotidine; D002927:Cimetidine