Zhao-quan Wang, R. Löbenberg, L. Sweeney, J. Wong, W. Finlay
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Improved Drug Delivery: Spray Freeze Dried Nano-Liposomal Inhaled Aerosols
A novel powder formulation for inhaled aerosol drug delivery of nano-liposomes has been prepared using spray-freeze drying. After saline reconstitution 91% of the liposome particles (mean volume size) were found to be smaller than 600 nm. Upon aerosol dispersion, a fine particle fraction (FPF) of more than 80% was achieved for this formulation with a model drug (ciprofloxacin) using a new passive inhaler (patent pending) at an inhalation flow rate of 60 l/min.
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