Terbutaline: an effective bronchodilator by inhalation.

Ninety-nine patients with severe bronchial asthma were tested with two inhalations of Terbutaline. The peak expiratory flow rate of each was determined by means of the Wright peak flow meter, and compared with a baseline taken previously and recorded. The final results were compared with those obtained in the same patients who alternately had received two inhalations of Salbutamol. The average improvement with Terbutaline was 20% per patient as compared with 16% with Salbutamol, indicating no statistically significant therapeutic difference between the two drugs.