The present invention relates to a method for evaluating the effectiveness of an
aerosol (3) for pulmonary
drug delivery, as well as
inhaler devices (2, 2a, 2b, 2c, 2d), orally inhaled drugs (1), and
drug / device combination products (7). [Solution] An
inhaler device (2, 2a, 2b, 2c, 2d) can generate an
aerosol (3), which contains
aerosol particles (30) containing an orally
inhaled drug (1). The method includes the steps of providing a computational
lung model (Lmod) and a computational
particle transport and deposition model (Pmod), calculating the spatial
particle deposition distribution (Ddist) of discrete particles (30') based on a determined aerosol value (Aval) of an aerosol parameter (Apar), calculating the
efficacy value (Eval) of an
efficacy parameter (Epar) based on the spatial
particle deposition distribution (Ddist), and using the
efficacy value (Eval) to automatically evaluate the efficacy of the aerosol (3) for
lung drug delivery.