title: Study of the effect of small dose of steroid to ephedrine--theophylline combination in chronic obstructive pulmonary disease.
mesh_terms: D000293:Adolescent; D000328:Adult; D004305:Dose-Response Relationship, Drug; D004359:Drug Therapy, Combination; D004809:Ephedrine / Q000008:administration & dosage*; D005260:Female; D006801:Humans; D008173:Lung Diseases, Obstructive / Q000188:drug therapy*; D008297:Male; D010634:Phenobarbital / Q000008:administration & dosage; D011239:Prednisolone / Q000008:administration & dosage*; D012129:Respiratory Function Tests; D013806:Theophylline / Q000008:administration & dosage*
chemical_list: D011239:Prednisolone; D013806:Theophylline; D004809:Ephedrine; D010634:Phenobarbital