An inhalation-synchronized fluid product dispenser device comprising a body provided with a mouthpiece, a product reservoir containing a fluid product and a propellant gas being mounted to slide axially relative to said body, a metering valve, comprising a valve member movable between a rest position and an actuation position, being assembled on said reservoir for selectively dispensing the fluid product on each actuation, said device further comprising: - a blocking element that is movable and/or deformable between a blocking position in which said metering valve cannot be actuated, and an actuation position in which said metering valve, can be actuated, - a trigger element that is movable and/or deformable between a locking position in which it blocks said blocking element in its blocking position, and a release position wherein it does not block said blocking element, - an inhalation-controlled trigger system comprising an inhalation-sensitive member that is deformable and/or movable under the effect of inhaling, said inhalation-sensitive member cooperating with said trigger element, such that when said inhalation-sensitive member is deformed and/or moved, it moves and/or deforms said trigger element towards its release position, thus making it possible to move and/or deform said blocking element from its blocking position towards its actuation position, - an actuating member that is movable between a rest position and an actuation position under the effect of a spring, said actuating member cooperating with said blocking element such that in blocking position said blocking element, said blocking element prevents an axial movement of said actuating member, and in actuation position said blocking element, said blocking element makes it possible to move said actuating member axially, and - a dose meter, said blocking element comprising a locking projection that, in the locking position of the trigger element, cooperates with a locking shoulder of said trigger element so as to define a latch that prevents said blocking element from moving and/or deforming out of its blocking position, characterized in that said device comprising an automatic valve release system, which automatically returns said valve member from said valve towards its rest position after actuation of the valve, independently of the position of said actuating member. - a blocking element that is movable and/or deformable between a blocking position in which said metering valve cannot be actuated, and an actuation position in which said metering valve, can be actuated, - a trigger element that is movable and/or deformable between a locking position in which it blocks said blocking element in its blocking position, and a release position wherein it does not block said blocking element, - an inhalation-controlled trigger system comprising an inhalation-sensitive member that is deformable and/or movable under the effect of inhaling, said inhalation-sensitive member cooperating with said trigger element, such that when said inhalation-sensitive member is deformed and/or moved, it moves and/or deforms said trigger element towards its release position, thus making it possible to move and/or deform said blocking element from its blocking position towards its actuation position, - an actuating member that is movable between a rest position and an actuation position under the effect of a spring, said actuating member cooperating with said blocking element such that in blocking position said blocking element, said blocking element prevents an axial movement of said actuating member, and in actuation position said blocking element, said blocking element makes it possible to move said actuating member axially, and - a dose meter, said blocking element comprising a locking projection that, in the locking position of the trigger element, cooperates with a locking shoulder of said trigger element so as to define a latch that prevents said blocking element from moving and/or deforming out of its blocking position, characterized in that said device comprising an automatic valve release system, which automatically returns said valve member from said valve towards its rest position after actuation of the valve, independently of the position of said actuating member.