<Ol> <Li> Carry the fine particles of the active component (which must be fine to reach its target) </Li> <Li> Improve the flow - ability of the powder during manufacturing and help handling </Li> <Li> Act as a bulking agent </Li> <Li> Aid in powder uptake from the device during inhalation and aerosolization </Li> </Ol> <Li> Carry the fine particles of the active component (which must be fine to reach its target) </Li> <Li> Improve the flow - ability of the powder during manufacturing and help handling </Li> <Li> Act as a bulking agent </Li>

Dry-powder inhalers (dpis) vary extensively from one manufacturer to the next