An apparatus (10) and method to aid in administering inhaled pharmaceutical aerosol to a patient is configured to maintain a tongue in proper position and offset the patients upper and lower jaws during aerosol delivery. An adjustable member (26) is provided adjacent a mouthpiece and at least partially surrounds and moves with respect to the body of the apparatus. The adjustable member has a step structured (32, 34) to impart a selected amount of mandibular advancement to a patient during aerosol delivery. A tongue depressor (40) which may be integrally formed with the adjustable member configured to prevent a tongue from occluding a flow of aerosol is also provided.
