Once-daily budesonide/formoterol in a single inhaler in adults with moderate persistent asthma

AbstractPatients with moderate persistent asthma (n = 523; mean FEV1 77.4%) not fully controlled with inhaled corticosteroids (ICS; 400–1000 μg/day) were randomized to receive either once-daily budesonide/formoterol (160/4.5 μg, two inhalations); or twice-daily budesonide/formoterol (160/4.5 μg, one inhalation); or budesonide (400 μg) once-daily for 12 weeks. Once-daily dosing was administered in the evening and twice-daily dosing was administered in the morn-ing and evening. All patients received twice-daily budesonide (200 μg) during a 2-week run-in. Compared with budesonide alone, change in mean morning and evening peak expiratory flow was greater in the once-daily budesonide/formoterol group (27 and 17 1 min−1, respectively; P<0.001) and twice-daily budesonide/formoterol group (23 and 24 1 min−1, respectively; P<0.001). Night awakenings, symptom-free days, reliever-use-free days and asthma-control days were all improved during once-daily budesonide/formoterol therapy vs. budesonide (P≤0.05). Similar improvements were also seen with twice-daily budesonide/formoterol (P≤0.05). The risk of a mild exacerbation was reduced after once- and twice-daily budesonide/formoterol vs. budesonide (38% and 35%, respectively; P