title: Comparison of drugs for asthma.
mesh_terms: D000433:1-Propanol / Q000008:administration & dosage / Q000097:blood; D001249:Asthma / Q000188:drug therapy*; D002986:Clinical Trials as Topic; D006801:Humans; D010919:Placebos; D013147:Spirometry; D013806:Theophylline / Q000008:administration & dosage* / Q000097:blood
chemical_list: D010919:Placebos; D000433:1-Propanol; D013806:Theophylline