Abstract: An inhalation device for administering powdered forms of medication includes a housing with a rotatable dosing ball associated with an opening of a powdered reservoir located inside the housing. The dosing ball may be operated manually and includes a peripheral dosing cavity for receiving a dose of powder. The dosing ball is connected with a torsion spring and further includes a stop piece. In addition, the dosing ball is associated with a pivotable trip flap that has a movable limit stop. The dosing ball is preloaded by turning the dosing ball until the stop piece comes to rest on the movable limit stop of the trip flap. The dosing ball is then released as normal user breathing triggers a swaying of the trip flap.