Efficacy and safety of a new pressurised metered-dose inhaler formulation of budesonide/formoterol in children with asthma: a superiority and therapeutic equivalence study

Alyn H Morice, Stefan Peterson, Ola Beckman, Zuzana Kukova
Pulmonary Pharmacology & Therapeutics 2008, 21 (1): 152-9

AIM: This paediatric asthma study evaluated the efficacy and safety of a novel hydrofluoroalkane pressurised metered-dose inhaler (pMDI) formulation of budesonide/formoterol versus budesonide pMDI and budesonide/formoterol dry-powder inhaler (DPI).

METHODS: The study was a 12-week, multinational, double-blind trial involving children (aged 6-11 years) with symptomatic asthma on inhaled corticosteroids (375-1000 microg/day), with a history of exercise-induced bronchoconstriction and peak expiratory flow (PEF) > or =50% of predicted. Patients were randomised (two inhalations twice daily) to budesonide pMDI 100 microg, budesonide/formoterol DPI 80/4.5 microg or budesonide/formoterol pMDI 80/4.5 microg. The primary endpoint was change from baseline in morning PEF.

RESULTS: Overall, 622 patients were randomised. Increases in morning PEF with budesonide/formoterol pMDI and budesonide/formoterol DPI were therapeutically equivalent (29.5 versus 30.2l/min, respectively; 95% confidence interval: -6.0 to 4.6; P=0.78, also confirmed by per-protocol analysis). Improvements in secondary efficacy endpoints with both budesonide/formoterol formulations were not significantly different. Significantly greater improvement was achieved with budesonide/formoterol pMDI versus budesonide pMDI for morning PEF (+9.6l/min; P<0.001) and other lung function parameters. The safety profile of budesonide/formoterol pMDI was favourable and similar to that of budesonide/formoterol DPI and budesonide pMDI.

CONCLUSION: Budesonide/formoterol, administered via the therapeutically equivalent hydrofluoroalkane pMDI or DPI, is an effective and well-tolerated treatment for children with asthma.

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