Development of budesonide nanocluster dry powder aerosols: Formulation and stability

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Abstract

The physical and chemical stability of dry powder aerosol formulations is an essential component in the development of an inhaled therapeutic. The pharmaceutical processing methods and storage conditions are primary determinants of the stability of a dry powder inhaler (DPI) formulation. Wet milling was used to produce budesonide NanoClusters (NCs), which are agglomerates of drug nanoparticles (∼300 nm) with a mean aerodynamic diameter between 1 and 3 μm, capable of deep lung penetration. In this study, the reproducibility of NC processing and performance was established. The physical stability of a selected budesonide NC formulation was investigated using industry standard dose content uniformity and cascade impaction techniques. The chemical stability of the lead formulation was also determined as a function of processing parameters and storage conditions. This study confirms the reproducibility and robust stability of NC powders as a novel means to turn drug particles into high-performance aerosols. © 2012 Wiley Periodicals, Inc.

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El-Gendy, N., Huang, S., Selvam, P., Soni, P., & Berkland, C. (2012). Development of budesonide nanocluster dry powder aerosols: Formulation and stability. Journal of Pharmaceutical Sciences, 101(9), 3445–3455. https://doi.org/10.1002/jps.23176

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