A dry powder pharmaceutical composition for inhalation comprising salmeterol or a pharmaceutically acceptable salt thereof and fluticasone propionate in admixture with a pharmaceutically acceptable dry powder carrier, providing a delivered dose of salmeterol/fluticasone propionate equivalent to about 16/280 micrograms or to 16/140 micrograms.本發明係關於一種用於吸入之乾粉醫藥組成物,其包含沙美特羅或其醫藥上可接受之鹽及丙酸氟替卡松以及醫藥上可接受之乾粉載劑,其提供等於約16/280微克或16/140微克之遞送劑量的沙美特羅/丙酸氟替卡松。