Abstract: The nebulizer vial for aerosol therapy comprising a tube fed at a first end with compressed air, the tube being constricted at its second end prior to the relative exit orifice to obtain a venturi effect. The orifice of the tube emerges from the free surface of a solution of an aerosol therapy medicament, a nozzle being concentrically mounted on the second end of the tube such that between the tube and nozzle there remains an interspace communicating with the solution. A flow breaker device is provided above the orifice of the nozzle. The vial is provided with an exit for the formed aerosol and an inlet for entry of external air as a result of suction exerted by the patient on the exit. For diameter parity of the orifice of the nozzle, elements are provided to vary the distance between the nozzle orifice and the flow breaker device.