The article presents the results of research work studying the indices of the pulmonary ventilation function in children with chronic and recurrent bronchopulmonary disorders in cases of exacerbation of bronchitis against the background of erespal therapy. A high efficacy of this drug in exacerbation of recurrent and chronic bronchitis in children has been confirmed. As has been demonstrated, in infectious rhinitis that accompanies the exacerbation of bronchitis, erespal also improves the indices of patency of the upper respiratory tracts, according to the findings of anterior rhinomanometry.