title: Synergism of metaproterenol and theophylline.
mesh_terms: D002986:Clinical Trials as Topic; D004311:Double-Blind Method; D004357:Drug Synergism; D004359:Drug Therapy, Combination; D006801:Humans; D008173:Lung Diseases, Obstructive / Q000188:drug therapy; D009921:Metaproterenol / Q000008:administration & dosage* / Q000009:adverse effects / Q000627:therapeutic use; D010919:Placebos; D013806:Theophylline / Q000008:administration & dosage* / Q000009:adverse effects / Q000627:therapeutic use
chemical_list: D010919:Placebos; D009921:Metaproterenol; D013806:Theophylline