Adherence to pharmacotherapy is also considered an important basic tenet of asthma management. Adherence can simply be defined as the extent to which a patient follows the instructions of the prescriber (Osterberg and Blaschke, 2005). While inhaled therapy technique is an essential feature of asthma pharmacotherapy, some patients with good technique may have poor inhaler adherence. Available data suggest the average medication adherence to ICS in children is only approximately 50% (Fish et al., 2001; Osterberg and Blaschke, 2005).