 Eosinophilic bronchitis, which is identified by quantitative sputum cell counts eosinophils greater than 2 is responsive to corticosteroid treatment. It occurs alone or in association with asthma or in some patients with chronic obstructive pulmonary disease COPD. In most patients the eosinophilic bronchitis responds to treatment with inhaled steroids but in some it requires a minimum dose of prednisone to keep it controlled. At present, there is no outstanding drug which can have a prednisone-sparing effect. 