A dispenser for dispensing a viscous substance is described having a gun-shaped body with a grip part and a barrel part； a mouth piece arranged at an output end of the barrel part； a reception space at the output end for receiving a cartridge with the substance； a plunger accommodated displaceably in the barrel part for pressing the substance outwards out of the cartridge through the mouth piece； an actuator accommodated displaceably in the barrel part for displacing the plunger； an operating mechanism for operating the displacement of the actuator by a user； a vibration motor coupled to the plunger or to the actuator, which can be supplied by a battery to be placed in the grip； and a switch for switching the motor ON.
