Abstract: An automatic medication distributor including a hopper of general cylindrical shape, having boxes open transversally near the periphery of the hopper; a fixed base adapted to be associated to the hopper and provided, transversally and at a predetermined location of its periphery, with a delivery window; rotation drive mechanism of the hopper with respect to the base to successively bring each box in register with the delivery window; and a closing element for the delivery window, operated by the rotation of the hopper.