single center, double-blind, double-dummy, 2-way cross over study in asthmatic children already treated with inhaled corticosteroids

Inclusion Criteria:

• Prepuberal male and female outpatients, ≥ 5 and < 12 years old in Tanner stadium I according to Investigator's assessment;
• Clinical diagnosis of mild asthma during at least two months prior to screening visit;
• Forced Expiratory Volume during the first second (FEV1) > 80% of predicted normal values at screening visit;

Exclusion Criteria:

• Endocrinological diseases including growth impairment or other chronic diseases;
• Any concomitant disease requiring additional treatment with topic or systemic glucocorticosteroids;