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Development of Ciprofloxacin HCl-Based Solid Lipid Nanoparticles Using Ouzo Effect: An Experimental Optimization and Comparative Study

This study was performed to develop solid lipid nanoparticles of water soluble drug ciprofloxacin HCl using quick solvent diffusion evaporation technique (ouzo effect). A statistical central composite rotatable design was used to study the effect of independent variables. In the subsequent step, optimized SLN were further compared with nanostructured lipid carriers and nanoemulsion for particle size, zeta potential, drug entrapment, drug release, and stability. Comparative study revealed that the drug encapsulation efficiencies were enhanced by adding the Capmul MCM C8 into the solid lipid nanoparticles. The in vitro drug release study of all three formulations showed rapid release for nanoemulsion while controlled release for SLN. Stability study of all the formulation proved that nanostructured lipid carrier and SLN could prevent the drug expulsion during the storage period. Results of the study suggested that the SLN and nanostructured lipid carriers produced by the principle of ouzo effect could potentially be exploited for better drug entrapment efficiency and controlled drug release of water soluble actives.