Driving and dispensing devices for an injection device are used for administering a liquid product and adjusting a product dose and include a dosage display element with a helical dosage scale; an indication device for indicating a dosage value from the dosage scale; and a dosage element, which can be held by a user and screwed relative to the indication device around a rotational axis (L) and relative to the dispensing member along the rotational axis (L) in order to adjust the dosage to be administered. A bearing element having a thread is in a threaded engagement with a thread of the dosage indication element, and the thread pitch of the thread of the dosage indication element is not the same as the pitch (P1) of the helical scale, and may be greater or smaller than the pitch (P1) of the helical scale.