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.Inhalateur de poudre sèche (100), comportant un corps (110) contenant une chambre de dispersion (111), un capot (130) monté pivotant sur ledit corps entre une position fermée et une position ouverte, ledit capot comportant un orifice de distribution (131) à travers lequel l'utilisateur inhale, l'inhalateur comportant en outre une ouverture de chargement (121) recevant une capsule (10) contenant une dose de poudre sèche à inhaler, ladite capsule (10) comportant une partie supérieur (11) et une partie inférieure (12) séparable de ladite partie supérieure, ladite ouverture de chargement (121) comportant au moins une nervure de serrage (125) pour maintenir de manière serrante ladite partie supérieure (11) de la capsule (10) insérée dans ladite ouverture de chargement (121), avant et pendant l'ouverture de ladite capsule (10), ledit capot (130) comportant un ergot (135) qui, en fin de fermeture du capot (130), coopère avec ladite partie supér
