#$%^&*AU2020203437B220200917.pdf#####WO 2016/019253 PCT/US2015/043128 ABSTRACT A respirable dry powder including acetylsalicylic acid in particles having a mass median aerodynamic diameter (MMAD) within a range of about 0.5 pm to about 10 pm. The respirable dry powder may contain a pharmaceutically acceptable excipient, such as a phospholipid, in an amount ranging from about 0.1% (w/w) to about 10% (w/w) of the particles.