Aspherix® and CFDEM®coupling allow for the high-fidelity simulation of complex aerosolization and particle detachment processes within dry powder inhalers. By utilizing fully coupled fluid-particle and particle-particle interactions (four-way coupling) executed efficiently on the GPU, the software functions as a predictive digital twin capable of managing massive scales, such as one million particles within a one million cell CFD mesh. This integrated workflow enables engineers to precisely analyze how airflow shear forces release the API from coated particles, providing the critical optimization insights needed to maximize lung deposition, enhance dosing consistency, and accelerate regulatory approval cycles.