DPIs are challenging to design and should not be viewed merely as “packaging.”
When approaching a DPI development program, R&D teams often appear to be surprised by the wide and diverse range of technical challenges involved. Efficient internal communication between the groups responsible for formulation development, device design, regulatory affairs, marketing and commercialization is absolutely essential. The device is the interface between the user and the drug. The way the user interacts with it almost always affects how well it performs and ultimately how much drug is delivered.