Dry powder inhalers are accepted as being complex drug products due to the interactions which occur between the active pharmaceutical ingredients (APIs) and excipients within the formulation and the way this then affects the efficiency of drug delivery by the inhaler device. Obtaining component specific particle size and particle shape distribution data can help with understanding the properties of the formulation as part of formulation or deformulation studies. This application note describes how the combination of automated image analysis with Raman spectroscopy in the Morphologi G3-ID allows the individual components present within a dry powder inhaler formulations to be independently characterized and compared.

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