The present invention relates to a dry powder inhaler device (7), advancing a blister (4) with a plurality of medicament-carrying cavities (4.1) in a single direction, said blister being placed in the interior of an outer housing (1), and guided to an inner body from one side, and from the other side to a mouthpiece (3), said device (7) further comprising an actuating element (5) slid into the interior of said outer housing (1), and a lid (6) connected onto the outer housing, wherein said device further comprises a locking clips (8) containing at least one lug (8.1) retaining said actuating element at a certain displaced distance to which it is pushed, and connected to the outer body (1), in a way that allows said clips (8) to be moved vertically up- and downward, so as to ensure that each cavity of which the turn comes for use can be completely peeled off.
