Cimetidine.
D000284:Administration, Oral; D002927:Cimetidine / Q000008:administration & dosage / Q000009:adverse effects / Q000627:therapeutic use*; D004341:Drug Evaluation; D004381:Duodenal Ulcer / Q000188:drug therapy*; D006146:Guanidines / Q000627:therapeutic use*; D006801:Humans; D008297:Male; D013276:Stomach Ulcer / Q000188:drug therapy*
D006146:Guanidines; D002927:Cimetidine