A fluid dispenser, including a cover element； a blister strip； a blister opening mechanism； a first displacement mechanism having an indexer wheel； a second displacement mechanism pivoting between a non-dispensing position and a dispensing position； a cocking member for urging the second displacement mechanism towards the dispensing position, the cocking member spring-loaded by opening the cover； a blocking mechanism for retaining the second displacement mechanism in the non-dispensing position； a trigger mechanism for releasing the blocking mechanism； a slidable carriage displaceable between a non-indexing position and an indexing position and including an actuator co-operating with the indexer wheel； a connection mechanism activated during inhalation that connects the carriage with the cover, so as to displace said carriage towards its indexing position when the cover element is brought towards its closed position, and so as to displace said carriage towards its non-indexing position when brought towards its open position.
