This is a single centre, double-blind, double-dummy, randomised, single-centre, 2-way cross-over study in asthmatic children already treated with inhaled corticosteroids.

Inclusion Criteria:

• Prepuberal male and female outpatients, ≥ 5 and ≤ 11 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