Dispenser for dispensing a liquid or pulverulent medium, having - a medium store, - a dispensing opening and - a delivery mechanism for delivering medium from the medium store to the dispensing opening, wherein - the delivery mechanism has an actuating handle, which can be moved in an actuating direction in relation to the medium store and by means of which the delivery mechanism can be actuated for dispensing purposes, wherein a protective device is provided, and this safeguarding device - comprises at least two sub-shells (32, 34) which, in a safeguarding state, are connected to one another, by at least one coupling device (40, 42; 140, 142; 241) designed for repeated uncoupling and coupling operation, such that they cannot be moved in relation to one another, wherein - the protective device can be fitted on the delivery mechanism of the dispenser in a safeguarding position such that, in the safeguarding state of the protective device, accessibility to and/or movability of the actuating handle are/is prevented, and - release the coupling device (40, 42; 140, 142; 241) an enable state of the protective device is achievable, in which the sub-shells (32, 34) can be moved in relation to one another, and therefore the protective device can be separated from the delivery mechanism and it is thus possible to establish accessibility to or movability of the actuating handle, and - the coupling device (40, 42; 140, 142; 241) is formed by form-fitting coupling portions (40a, 42a; 142a, 142b; 241a, 242a, 242b) on the two sub-shells, which are coupled by the coupling device, and these can be transferred from a coupled state into an uncoupled state by partial deformation of the coupling portions (40a, 42a; 142a, 142b; 241a, 242a, 242b) of one or both sub-shells, characterized in that the protective device, in the fitted state, forms a sleeve which is open at least on one side and encloses the dispenser partially in the region of the delivery mechanism. - a medium store, - a dispensing opening and - a delivery mechanism for delivering medium from the medium store to the dispensing opening, - the delivery mechanism has an actuating handle, which can be moved in an actuating direction in relation to the medium store and by means of which the delivery mechanism can be actuated for dispensing purposes, - comprises at least two sub-shells (32, 34) which, in a safeguarding state, are connected to one another, by at least one coupling device (40, 42; 140, 142; 241) designed for repeated uncoupling and coupling operation, such that they cannot be moved in relation to one another, - the protective device can be fitted on the delivery mechanism of the dispenser in a safeguarding position such that, in the safeguarding state of the protective device, accessibility to and/or movability of the actuating handle are/is prevented, and - release the coupling device (40, 42; 140, 142; 241) an enable state of the protective device is achievable, in which the sub-shells (32, 34) can be moved in relation to one another, and therefore the protective device can be separated from the delivery mechanism and it is thus possible to establish accessibility to or movability of the actuating handle, and - the coupling device (40, 42; 140, 142; 241) is formed by form-fitting coupling portions (40a, 42a; 142a, 142b; 241a, 242a, 242b) on the two sub-shells, which are coupled by the coupling device, and these can be transferred from a coupled state into an uncoupled state by partial deformation of the coupling portions (40a, 42a; 142a, 142b; 241a, 242a, 242b) of one or both sub-shells,