A dose counter having a base body (460), with a rotary counter element assembled in the base body (460) on a pin (461) forming the axis of rotation. The rotary counter element co-operating with an actuator member (1430) adapted to cause the rotary counter element to turn each time the actuator member (1430) is actuated. The actuator member (1430) including a fastener (14301) for fastening to the base body (460) and arranged on a first side of the pin (461), and a substantially rigid support portion (1436) arranged on a second side of the pin (461). The support portion (1436) supporting an actuator element (1435) so that the actuator element (1435) is moved in translation. The support portion (1436) extended towards the pin (461) by a substantially-rectilinear flexible branch (1431) that supports a lug (14310) adapted to co-operate with the counter element on each actuation.
