title: Coffee and the gastrointestinal tract.
mesh_terms: D002110:Caffeine / Q000494:pharmacology; D003069:Coffee / Q000009:adverse effects*; D004064:Digestive System / Q000187:drug effects*; D006801:Humans; D007422:Intestines / Q000187:drug effects; D010437:Peptic Ulcer / Q000209:etiology; D013270:Stomach / Q000187:drug effects
chemical_list: D003069:Coffee; D002110:Caffeine