#$%^&*AU2018200844A120180301.pdf#####Abstract A nebulizer dispenser that reduces the amount of the aerosolized medication that is not delivered to the patient, comprising: A nebulizer chamber having an interior volume configured to retain a medication an inlet configured to receive a first flow of gas into the interior volume, the inlet comprising an entrainment passage configured to entrain the first flow of gas an outlet configured to direct the first flow of gas and the medication out of the interior volume an opening from the interior volume to an ambient environment and a first baffle within the interior volume wherein, in a first configuration, the first flow of gas is directed by the first baffle to mix with a second flow of gas from the opening into the interior volume, and the mixture of the first and second flow of gas is directed from the interior volume through the outlet, and in a second configuration, an increase in a pressure from the outlet into the interior volume causes the mixture of the first and second flow of gas within the interior volume to be displaced, by the first flow of gas, and move from the interior volume through the opening.