NANOPRECIPITATION TECHNIQUE FOR PREPARATION OF STERICALLY STABILIZED RISPERIDONE NANOSUSPENSION: IN VITRO AND IN VIVO STUDY
Journal Title: International Journal of Pharmacy and Pharmaceutical Sciences - Year 2016, Vol 8, Issue 5
Abstract
Objective: Risperidone is an atypical antipsychotic drug used to treat schizophrenia; however it suffers from a poor aqueous solubility, which delays its onset of action. Therefore, the purpose of the present study is to utilize the nanotechnology to formulate nanoparticles that enhance the dissolution and hence the bioavailability of risperidone.Methods: Nanosuspensions were prepared by nano precipitation method in the presence of selected stabilizers at different concentrations. The nanosuspensions were evaluated for their particle size, zeta potential, drug content and In vitro drug dissolution. The selected formula was freeze dried and characterized by scanning electron microscopy (SEM), fourier transforms infrared spectroscopy (FTIR), differential scanning calorimetry (DSC), X-ray diffractometry studies (XRD) and pharmacokinetic study.Results: The in vitro dissolution showed higher drug release compared to the pure drug. The optimum formula has an average particle size of 215.56±12.65 nm and zeta potential of-19.84±2.55mV. The bioavailability parameters in the rabbits were enhanced by 2 folds when compared with the marketed tablets (Risperidal®).Conclusion: Nanoprecipitation method was successfully employed to produce stable risperidone nanosuspension by using the proper stabilizer (pluronic F 127). Risperidone nanoparticles may be a promising formula that improves the dissolution and hence oral bioavailability of poorly water soluble risperidone. Keywords: Risperidone, Nanosuspension, Pluronic F127, Nanoprecipitation, Bioavailability
Authors and Affiliations
Heba F. Salem, Rasha M. Kharshoum
Keywords
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