Administration device having a display drum, comprising: a) a housing (1, 2) having a receiver for a product to be administered, b) a first conveyor member which is able to be moved in a conveying direction relative to the housing (1, 2) for conveying the product, c) a second conveyor member which, in a first threaded engagement with the first conveyor member, is able to be moved in and against the conveying direction relative to the housing (1, 2), rotationally relative to the housing (1, 2) and the first conveyor member and translationally against the conveying direction relative to the first conveyor member, wherein the second conveyor member is sleeve-like and has an internal thread on its distal end, said internal thread being in the first threaded engagement with an external thread of the first conveyor member, d) a metering device, by means of which a product dose is able to be regulated and which comprises the display drum for the display of the product dose, said display drum being able to be moved, in a second threaded engagement, rotationally relative to the housing (1, 2) and translationally in and against the conveying direction, e) a coupling comprising a first coupling member and a second coupling member, said coupling connecting the second conveyor member and the display drum to each other in a coupling engagement in a non-rotatable manner, wherein the coupling engagement is able to be released by actuating an actuating element, wherein the actuating element is connected non-moveably to the second coupling element (21, 22) as a part which is separate from the second coupling member (21, 22) in and against a direction in which the second coupling member (21, 22) is moved out of the coupling engagement, and f) a compensating device (22, 23) which is variable in length in the conveying direction and connects the second conveyor member to the display drum in a non-rotatable manner in the event of an existing coupling engagement, characterised in that g) the compensating device (22, 23) comprises a first compensating structure and a second compensating structure which overlap each other in the driving direction and are guided relative to each other and directly against each other in a non-rotatable manner and wherein one of the compensating structures is connected to the display drum and the other is connected to the second conveyor member in a non-rotatable manner in the event of an existing coupling engagement, wherein the second coupling member forms the first compensating structure and the second compensating structure is formed in a unit with the second conveyor member. a) a housing (1, 2) having a receiver for a product to be administered, b) a first conveyor member which is able to be moved in a conveying direction relative to the housing (1, 2) for conveying the product, c) a second conveyor member which, in a first threaded engagement with the first conveyor member, is able to be moved in and against the conveying direction relative to the housing (1, 2), rotationally relative to the housing (1, 2) and the first conveyor member and translationally against the conveying direction relative to the first conveyor member, wherein the second conveyor member is sleeve-like and has an internal thread on its distal end, said internal thread being in the first threaded engagement with an external thread of the first conveyor member, d) a metering device, by means of which a product dose is able to be regulated and which comprises the display drum for the display of the product dose, said display drum being able to be moved, in a second threaded engagement, rotationally relative to the housing (1, 2) and translationally in and against the conveying direction, e) a coupling comprising a first coupling member and a second coupling member, said coupling connecting the second conveyor member and the display drum to each other in a coupling engagement in a non-rotatable manner, wherein the coupling engagement is able to be released by actuating an actuating element, wherein the actuating element is connected non-moveably to the second coupling element (21, 22) as a part which is separate from the second coupling member (21, 22) in and against a direction in which the second coupling member (21, 22) is moved out of the coupling engagement, and f) a compensating device (22, 23) which is variable in length in the conveying direction and connects the second conveyor member to the display drum in a non-rotatable manner in the event of an existing coupling engagement, characterised in that g) the compensating device (22, 23) comprises a first compensating structure and a second compensating structure which overlap each other in the driving direction and are guided relative to each other and directly against each other in a non-rotatable manner and wherein one of the compensating structures is connected to the display drum and the other is connected to the second conveyor member in a non-rotatable manner in the event of an existing coupling engagement, wherein the second coupling member forms the first compensating structure and the second compensating structure is formed in a unit with the second conveyor member.