An injection device for metering and discharging a fixed dose of a liquid product includes a metering element or a setting button for setting and for discharging a fixed dose by means of a guide element, and a holding element having a counter guide element and a first holding member and a second holding member. In an initial position, in a retracted and in a discharged position of the metering element or the setting button, the guide element of the metering element or of the setting button engages in a guiding manner with or engages in a slotted guide system with the counter guide element of the holding element.