Efficacy and Safety Study to Compare Formoterol Fumerate in the Pressair DPI to the Foradil Aerolizer in Patient With Mild to Moderate Asthma

Inclusions: * Patients with mild-to-moderate asthma for at least 6 months prior to Visit 1 (as defined in the GINA Guidelines) which is unlikely to exacerbate during the study (e.g., due to seasonal allergen exposure). * Patients must be on a stable dose of Inhaled Corticosteroids (ICS) for at least 30 days prior to Visit 1. Patients on a combination of ICS/LABA must discontinue the use of LABA and must be on a stable dose of ICS for 30 days prior to Visit 1. * Qualifying spirometry at Visit 1 demonstrates highest FEV1 is ≤ 85% and ≥ 60% of predicted for age, height, and gender using NHANES III (NHANES 2010) when bronchodilator medications have been withheld the appropriate length of time per the List of Concomitant Medications (Appendix III) * Patient demonstrates reversibility with an increase in FEV1 of 12% and 200 mL after the administration of 360 µg of albuterol. * Highest pre-dose FEV1 at Visits 2, 4, 6, 8, and 10 must be within 25% of the qualifying FEV1 at Visit 1 Exclusions: * Patients with any clinically significant respiratory conditions other than mild to moderate asthma, such as COPD, active tuberculosis, or history of interstitial lung disease * Patients with a severe asthma exacerbation requiring hospitalization in the previous 12 months * Patient is not able to withhold use of inhaled short-acting beta-agonist (SABA) for at least 6 hours prior to visit