The present invention is provided with: a tablet supply unit main body provided with a supply box; a bottom plate; and a bottom plate support member. The bottom plate opens and closes a bottom opening of the supply box by means of a second end pivoting centered on a first end supported by the tablet supply unit main body; the bottom plate support member can regulate the pivoting of the bottom plate; the tablet supply unit main body and the bottom plate support member can move relative to each other in the horizontal direction; by means of the relative motion, the bottom plate pivots between a state such that the opening of the bottom opening is blocked and an open state; and in the state of the bottom plate sealing the bottom opening, at least a portion of the upper surface of the bottom plate is positioned upward and the bottom surface of the edge of the bottom opening is positioned downwards.
