Cimetidine.
D002927:Cimetidine / Q000008:administration & dosage* / Q000032:analysis / Q000627:therapeutic use; D004381:Duodenal Ulcer / Q000188:drug therapy; D005260:Female; D006146:Guanidines / Q000008:administration & dosage*; D006801:Humans; D008431:Maternal-Fetal Exchange; D008895:Milk, Human / Q000032:analysis; D011247:Pregnancy
D006146:Guanidines; D002927:Cimetidine