title: [Drug administration schedule of anti-ulcer agents to prevent recurrence of peptic ulcer; intermittent and long-term administration].
mesh_terms: D002927:Cimetidine / Q000008:administration & dosage; D004334:Drug Administration Schedule; D006635:Histamine H2 Antagonists / Q000008:administration & dosage*; D006801:Humans; D010437:Peptic Ulcer / Q000188:drug therapy / Q000517:prevention & control*; D011899:Ranitidine / Q000008:administration & dosage; D012008:Recurrence
chemical_list: D006635:Histamine H2 Antagonists; D002927:Cimetidine; D011899:Ranitidine