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 opening (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.
