Bond Avillion 2 Development LP

This is a US study comparing the efficacy and safety of BDA MDI [Budesonide/Albuterol Sulfate (BDA) metered dose inhaler (MDI)] with AS [Albuterol Sulfate] MDI, both are administered as needed for up to 12 months.

To compare the pharmacokinetics of budesonide delivered by BDA MDI to budesonide delivered by Pulmicort Respules in children with Asthma aged 4 to 8 years.

This is a multicenter, randomized, double-blind, single-dose, placebo-controlled, 2-period, crossover study to evaluate the efficacy and safety of budesonide/albuterol metered-dose inhaler (BDA MDI/PT027) as compared with a placebo metered-dose inhaler (placebo MDI) on exercise-induced bronchoconstriction (EIB) in adult and adolescent subjects with asthma. Subjects will receive each study treatment on separate visits and undergo a treadmill exercise challenge test for up to 10 minutes so that the effect of study treatment on exercise-induced bronchoconstriction can be evaluated.