FORMULATION, DEVELOPMENT AND CHARACTERISATION OF NIMODIPINE LOADED SOLID LIPID NANOPARTICLES
Keywords:Nimodipine, Solid lipid nanoparticles, Stearic acid, Palmitic acid, Tween-80
Objective: The aim of the present study is to develop solid lipid nanoparticles (SLNs) of Nimodipine using hot homogenization followed by ultrasonication technique and to improve the dissolution characteristics of the drug.
Methods: The Nimodipine-loaded SLN was prepared using palmitic acid and stearic acid as a lipid matrix and Tween-80 as an emulsifier by a hot homogenization and ultra-sonication method. The physicochemical characteristics of SLN were investigated for entrapment efficiency, zeta potential, in vitro drug release, particle size analysis, Fourier transform infrared studies, scanning electron microscopy, and stability studies.
Results: The mean particle size, PDI, Zeta potential and entrapment efficiency of optimized Nimodipine SLN formulation of stearic acid was found to be 119.54 nm, 0.165,-17.60mV, 85% and for palmitic acid was found to be 132.54 nm, 0.155,-17.0mV, 81% respectively. In vitro drug release studies indicated that after an initial burst release, SLN could provide prolonged release of Nimodipine. The selected SLNs have shown good stability for a period of 180 d.
Conclusion: SLN formulations showed the best results in EE as well as in vitro drug release and therefore, these results indicate that SLN might be a promising delivery system to enhance the release of Nimodipine.
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