A medicine dispenser includes a barrel to store medicine, a slidable shuttle disposed in the barrel, a threaded shaft including a threaded outer surface and a trench formed along the threaded outer surface, and a threaded cap connected to the barrel and including an opening through which the threaded shaft is threaded into, and a feedback member protruding inside the opening, wherein the threaded shaft pushes the slidable shuttle to dispense the medicine out of the barrel and the feedback member interlocks into the trench according to a rotation of the threaded shaft.
