title: Relapsing ulcers and mucosal protecting agents.
mesh_terms: D001729:Bismuth / Q000494:pharmacology*; D002927:Cimetidine / Q000494:pharmacology*; D004381:Duodenal Ulcer / Q000188:drug therapy*; D006146:Guanidines / Q000494:pharmacology*; D006801:Humans; D007413:Intestinal Mucosa / Q000187:drug effects*; D009942:Organometallic Compounds
chemical_list: D006146:Guanidines; D009942:Organometallic Compounds; D002927:Cimetidine; C002791:bismuth tripotassium dicitrate; D001729:Bismuth