title: Cimetidine and active duodenal and prepyloric ulcers.
mesh_terms: D002986:Clinical Trials as Topic; D004341:Drug Evaluation; D004381:Duodenal Ulcer / Q000188:drug therapy*; D005750:Gastric Juice / Q000378:metabolism; D005753:Gastric Mucosa / Q000378:metabolism; D006146:Guanidines / Q000627:therapeutic use*; D006633:Histamine Antagonists / Q000627:therapeutic use*; D006801:Humans; D007093:Imidazoles / Q000627:therapeutic use*; D010919:Placebos; D013276:Stomach Ulcer / Q000188:drug therapy*
chemical_list: D006146:Guanidines; D006633:Histamine Antagonists; D007093:Imidazoles; D010919:Placebos