Comparable long-term safety and efficacy of a novel budesonide/formoterol pressurized metered-dose inhaler versus budesonide/formoterol Turbuhaler in adolescents and adults with asthma

Alyn H Morice, Ludĕk Hochmuth, Jan Ekelund, Anders Thorén, Allan S Puterman
Pulmonary Pharmacology & Therapeutics 2008, 21 (1): 32-9
Budesonide/formoterol in one inhaler is an established therapy for asthma and chronic obstructive pulmonary disease. The long-term safety and efficacy profile of a novel hydrofluoroalkane (HFA) pressurized metered-dose inhaler (pMDI) formulation of budesonide/formoterol was compared with that of budesonide/formoterol in a dry powder inhaler (DPI; Turbuhaler). This multinational, 52-week, randomized, open, parallel-group study included patients aged > or = 12 years with asthma who had a forced expiratory volume in 1s (FEV1)> or = 50% of predicted normal; all patients used inhaled corticosteroids (400-1200 microg/day) and needed additional short-acting beta 2-agonist therapy. Patients were randomized to receive budesonide/formoterol pMDI or DPI 160/4.5 microg, two inhalations twice daily. Safety endpoints included assessment of adverse events and laboratory parameters. Efficacy endpoints included change from baseline in FEV1 and time to first severe asthma exacerbation. Overall, 673 patients (446pMDI, 227DPI) were included. There were no clinically significant differences between treatment groups in the nature, incidence or severity of adverse events or laboratory parameters. The number of patients experiencing adverse events was comparable in the pMDI (332/446 [74%]) and DPI (175/227 [77%]) groups; the most commonly reported adverse event was upper respiratory tract infection. The proportion of patients discontinuing as a result of adverse events was low in both groups (pMDI 12/446 [3%], DPI 2/227 [1%]). Lung function was improved to a similar extent in both groups and there was no detectable difference in time to first severe asthma exacerbation. The novel HFA pMDI formulation of budesonide/formoterol is an equally well tolerated and effective treatment for adults and adolescents with asthma as the budesonide/formoterol DPI.

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