Comparing the Efficacy of Bricanyl M2 and Bricanyl M3 at 0.5 and 1.5 mg Dose Levels, to Allow for a Switch From Bricanyl Turbuhaler M2 to Bricanyl Turbuhaler M3

A Randomised, Double-blind, Double-dummy, Multi-site, Phase III, Single Dose, 4-way Cross-over Pharmacodynamic Study Evaluating the Efficacy of Bricanyl Turbuhaler M3 Compared to Bricanyl Turbuhaler M2 by Studying the Protective Effect on Methacholine Induced Bronchoconstriction in Patients With Stable, Mild to Moderate Asthma