The invention of the present application relates to an apparatus to aid in administering inhaled pharmaceutical aerosol to a patient. The apparatus is used in conjunction with an aerosol delivery device. The apparatus comprises steps on the top and bottom of the apparatus, which when used aid the patient causes mandibular advancement, and opening of the mouth, causing opening of patients airway, resulting in improved aerosol lung deposition. The invention also relates to a method of using such apparatus in a combination with an aerosol delivery device or a system, and to the mouthpiece of said apparatus.
