An assembly for the inhalation of a powdery substance (2) is described, wherein the assembly comprises a storage chamber (15) configured to hold a plurality of doses of the substance (2) and an organizing member (30) rotatably arranged within the storage chamber (15) for agitating the substance (2) when the organizing member (30) is rotated with respect to the storage chamber (15). The organizing member (30) comprises a main body (95) and a cut-out (29), wherein the main body (95) comprises a solid section of the organizing member (30), and wherein the angular dimension of the cut-out (29) is smaller than the angular dimension of the main body (95). Furthermore, the use of an organizing member (30) for agitating a substance (2) is provided. Furthermore, an inhalation device (1) for the inhalation of a powdery substance (2) is described.
