Absence of bronchodilatory effect from etamiphylline.
D001249:Asthma / Q000188:drug therapy; D001993:Bronchodilator Agents; D005069:Evaluation Studies as Topic; D006801:Humans; D013806:Theophylline / Q000031:analogs & derivatives* / Q000494:pharmacology / Q000627:therapeutic use
D001993:Bronchodilator Agents; C007635:etamiphylline; D013806:Theophylline