Measuring efficacy and safety of different inhaled corticosteroid preparations

Inhaled corticosteroids are the mainstay of treatment for persistent asthma because of their proven efficacy, which is better than any other class of antiasthma therapy. Concerns about unwanted systemic effects with long-term use has, however, limited their use. Efforts have been made to develop inhaled corticosteroids with less systemic activity for a given clinical effect, thereby improving their therapeutic index. Many different study …