Abstract: A dry powder inhaler includes an inhalation channel connected to a mouthpiece, a container for storing a powdered medicament, a de-agglomerator with a vortex chamber located at an end of the inhalation channel, a metering device including a shuttle having a dosing recess. The shuttle is movable between a filling position, in which the dosing recess is in alignment with an opening of the container, and an inhalation position, in which the dosing recess is in alignment with the vortex chamber. The opening of the container is elongated along a major axis and the dosing recess is elongated along a main axis and, when the shuttle is in the filling position, an edge of the opening of the container encloses the dosing recess.