title: Comparison of ipratropium bromide and an oral anticholinergic drug in chronic bronchitis.
mesh_terms: D000284:Administration, Oral; D001286:Atropine Derivatives / Q000627:therapeutic use*; D001991:Bronchitis / Q000188:drug therapy*; D002908:Chronic Disease; D002986:Clinical Trials as Topic; D004341:Drug Evaluation; D006801:Humans; D009241:Ipratropium / Q000008:administration & dosage / Q000009:adverse effects / Q000627:therapeutic use*; D010276:Parasympatholytics / Q000008:administration & dosage / Q000009:adverse effects / Q000627:therapeutic use*; D011398:Promethazine / Q000008:administration & dosage / Q000009:adverse effects / Q000031:analogs & derivatives / Q000627:therapeutic use
chemical_list: D001286:Atropine Derivatives; D010276:Parasympatholytics; D011398:Promethazine; D009241:Ipratropium