It consists of a watery solution (2) with the medical active principles and, upper to the watery solution (2), of an oil or oil-gel solution (3) with the medical active principles. Sail oil or gel-oil solution (3) floats over the watery solution without mixing with the same under watery solution (2). Both the solutions (2, 3) are contained into a bottle (1) having an exit equipped with a cannula (7).
