Effects and actions of DSCG and corticosteroids in the airways could not essentially evaluated at the same situation, before the inhaled BDP had been used. Each of the drugs have been shown to reduce both immediate and late phase responses in experimentally induced asthma, exercise induced bronchospasm, and bronchial hypersensitivity to histamine especially after the prolonged pretreatment of BDP. DSCG probably targets nonspecifically the surfaces of relevant cells including mast cells and eosinophils, but BDP are known to act specifically and/or nonspecifically on the gene transcription in the various types of cells including eosinophils, lymphocytes, and resident cells. Many informations on the systemic side effects of BDP will be still required.