title: Histamine H2 antagonists.
mesh_terms: D000818:Animals; D001729:Bismuth / Q000627:therapeutic use; D002229:Carbenoxolone / Q000627:therapeutic use; D055598:Chemical Phenomena; D002621:Chemistry; D002927:Cimetidine / Q000009:adverse effects / Q000494:pharmacology* / Q000627:therapeutic use; D004381:Duodenal Ulcer / Q000188:drug therapy; D005750:Gastric Juice / Q000378:metabolism; D005764:Gastroesophageal Reflux / Q000188:drug therapy; D006146:Guanidines / Q000494:pharmacology*; D006801:Humans; D013276:Stomach Ulcer / Q000188:drug therapy
chemical_list: D006146:Guanidines; D002927:Cimetidine; D002229:Carbenoxolone; D001729:Bismuth