title: A double blind cross-over study of a slow release aminophylline tablet (Phyllocontin Continus tablets) as a concomitant therapy in patients with chronic bronchitis on salbutamol maintenance therapy.
mesh_terms: D000420:Albuterol / Q000627:therapeutic use*; D000628:Aminophylline / Q000008:administration & dosage / Q000627:therapeutic use*; D001991:Bronchitis / Q000188:drug therapy*; D002908:Chronic Disease; D002986:Clinical Trials as Topic; D003692:Delayed-Action Preparations; D004311:Double-Blind Method; D004359:Drug Therapy, Combination; D006801:Humans; D008875:Middle Aged
chemical_list: D003692:Delayed-Action Preparations; D000628:Aminophylline; D000420:Albuterol