The invention relates to a device for dispensing a fluid product synchronised with the inhalation, said device comprising a body (10) equipped with a mouthpiece (400). In addition, a product container (100) containing a fluid product and a propellant gas is mounted axially slidable inside the body (10), and a metering valve (200) including a plug (210) is assembled to the container (100) for the selective dispensing of the fluid product. The device also comprises: an actuation element (550) that can be moved and/or deformed between a non-actuation position, in which the metering valve (200) cannot be actuated, and an actuation position in which the metering valve (200) can be actuated； and a trigger system controlled by the inhalation, comprising an inhalation-sensitive member (60； 65) which can be deformed and/or moved by the inhalation and which, upon deforming and/or moving, moves and/or deforms the actuation element (550) from its non-actuation position to its actuation position, said actuation element being a locking element (550) which, in the non-actuation position, allows the axial movement of the plug (210) of the metering valve (200) together with the container (100) in the body (10), preventing the actuation of the metering valve (200) when the container (100) is moved axially inside the body (10) without inhalation.Dispositif de distribution de produit fluide synchronisé avec l'inhalation, comportant un corps (10) pourvu d'un embout buccal (400), un réservoir de produit (100) contenant un produit fluide et un gaz propulseur étant monté axialement coulissant dans ledit corps (10), une valve doseuse (200) comportant une soupape (210) étant assemblée sur ledit réservoir (100) pour distribuer sélectivement le produit fluide, ledit dispositif comportant un élément d'actionnement (550) déplaçable et/ou déformable entre une position de non actionnement, dans laquelle ladite valve doseuse (200) ne peut pas être actionnée, et une position d'actionnement, dans laq
