The invention relates to a device for dispensing a fluid product, comprising a lid élément (12) that is movable between closed and 1000 open positions a strip of blister packs a means for opening the blister packs a first means for moving said blister packs, comprising an indexing wheel (40), and a second means (90) for moving said blister packs, pivotable between non-dispensing and dispensing positions, said indexing wheel (40) being rotatably mounted on said second movement means an arming member (800) for urging said second movement means toward said dispensing position, said arming member being loaded by compressing a spring (50) by opening said lid a locking means (30) for holding said second movement means in non-dispensing position a triggering means (60) actuated by the inhalation of the user in order to release said locking means a sliding carriage (1000) capable of moving between non-indexing and indexing positions, comprising an actuator (1010) engaging with said indexing wheel (40) in order to rotate said wheel when said carriage moves toward the non-indexing position thereof a securing means (900) which is only activated during inhalation, and which secures said carriage (1000) to said lid (12) in order to move said carriage toward the indexing position thereof when said at least one lid élément is returned toward the closed position thereof, and for moving said carriage toward the non-indexing position thereof when said at least one lid élément is returned toward the oo open position thereof.