both terbutaline and ephedrine caused significant bronchodilation , but the effect of terbutaline on specific airway conductance ( sga ) was significantly greater ( peak mean increase in sga 0.069 vs 0.027 l/sec/cm h2o/l ) , had an earlier onset ( 30 minutes vs 1 hour ) and lasted longer ( 7 hours vs 4 hours ) than that of ephedrine .
C1371299
bronchodilation
C0014479
ephedrine