The invention relates to an inhalation therapy device having an aerosol generator (1) comprising a membrane (2) that creates fluid droplets from fluid present on one side and gives off said droplets as an aerosol on the other side when the membrane is vibrated, and furthermore, a vibration creation arrangement (3) that is connected to the membrane such that the membrane is vibrated when the vibration creation arrangement is stimulated to vibrate in the activation phases of the aerosol generator by a supplied activation signal. An activation device (10) that is connected to the vibration creation arrangement is designed to supply an activation signal to the vibration creation arrangement (3) in the activation phases (Ex) of the aerosol generator (1), in particular an alternating voltage at several successive intervals (I1 . . . In) spaced apart from one another.
