An inhalation device comprising a drug chamber (4) for holding a pharmaceutical (3), a vibrator (2) for aerosolizing the pharmaceutical (3), and a wave reflector (6), wherein the drug chamber (4) comprises at least one inlet hole (7) and at least one outlet hole (8), so that air can be drawn into the inlet hole (7) and out from the outlet hole (8), and wherein a standing wave pattern is created by acoustic energy that is produced by the vibrator (2) and reflected back at least in part to the vibrator (2) by the reflector (6) in order to facilitate mixing and release of the pharmaceutical.
