The invention relates to a dry-powder inhaler (100) comprising a body ( 110) containing a dispersion chamber ( 111), and a lid (130) mounted on the body such that it can pivot between a closed position and an open position, said lid including a dispensing opening (131) through which the user inhales. The inhaler also comprises a loading opening (121) which can receive a capsule (10) containing a dose of dry powder to be inhaled, said capsule (10) comprising a top portion ( 11), and a bottom portion (12) which can be separated from the top portion. The above-mentioned loading opemng (121) comprises at least one clamping rib (125) for clampingly holding the top portion ( 11) of the capsule (10) inserted into the loading opening (121) before and during the opening of said capsule (10). The lid (130) comprises a lug (135) which, when the lid (130) is completely closed, engages with the top portion ( 11) of the capsule that is clampingly held in the loading opening (121), in order to push same into the dispersion chamber ( 111) of the inhaler.
