A device for dispensing individual doses of powder from respective pockets of a carrier, the device including: first and second supports rotatable about a central axis and for supporting respective first and second carriers having cavities with respective pockets formed therein and arranged in respective first and second circular arrays centred on the central axis, a changeover component located between the first and second supports, the first support having a first feature for engaging with the changeover component and the second support having a second feature for engaging with the changeover component, and an indexing mechanism arranged to rotate each of the first and second supports, wherein the indexing mechanism is arranged to rotate the first support until the first feature engages the changeover component such that the first support then moves the changeover component, the changeover component being arranged to then engage the second feature so as to rotate the second support to a position from which the indexing mechanism is arranged to rotate the second support.
