The invention relates to an inhalation therapy device (1) which comprises an atomizer (2) for atomizing a drug which is advantageously present in the form of a fluid (8) into an atomization chamber (12) so that an aerosol or mist (21) is provided in the atomization chamber (12). The patient or user can inhale the aerosol (21) produced by the atomizer (2) from the atomization chamber (12) via a mouthpiece (13). The ampoule (100) is inserted into an ampoule holder (3) holding the fluid-containing ampoule (100). The inhalation therapy device (1) also comprises an opening unit (4) for opening the fluid-containing ampoule (100). The ampoule holder (3) advantageously comprises a first part (31), disposed displaceably in relation to the opening unit (4), thereby allowing an ampoule (100) present in the ampoule holder to be displaced in the direction of the opening unit.
