Abstract: An inhaler (1) including a blister strip (2) is proposed. The unused blister strip is stored in a spiral (16). After use, the blister strip is conveyed into another spiral (17). Both spirals share a common space within the inhaler and may be separated by a loose guiding element (18). The spirals and the guiding element may comprise protrusions (19) to reduce sliding friction. Additionally or alternatively, a lubricant (31) may be used to reduce friction.

Abstract: A passive inhaler (1) for delivery of a powder-form inhalation formulation from a blister strip (2) with a plurality of blister pockets (3) is proposed. The inhaler comprises an impaction element (31) onto which the air stream can impact together with entrained inhalation formulation for better deagglomeration. Alternatively, the inhaler comprises an oscillating and/or vibrating device (35) for better de-agglomeration of the inhalation formulation. Alternatively or additionally, the inhaler comprises one or two mixing means for generating swirls, preferably with opposite rotation directions.

Abstract: A passive inhaler for delivery of a powder-form inhalation formulation from a blister strip with a plurality of blister pockets is proposed. The inhaler has a flow resistance of at least 75000 Pa1/2s/m3.