Abstract
The aim of present work is to enhance the solubility and bioavailability of Simvastatin by solid dispersion technique and characterize the same. Preliminary solubility studies were conducted to check the solubility in different polymers. Based on the results 20 formulations prepared by solvent evaporation method with varying ratios of Kleptose HPB, Soluplus, Kolliwax GMS II, Kolliphor P188 and PVPK-30. All the formulations were analyzed for solubility, percentage yield, drug content and in vitro drug release. The formulation SD20 with enhanced solubility of 20.05 ± 0.02μg/mL in Kolliwax GMS II, percentage yield of 99.13% and dissolution rate of 99.2 ± 2.3% within 90 min is chosen as optimized formulation. The formulation is further Characterized for Drug excipient interaction by FTIR, PXRD and SEM studies. The stability studies for 6 months indicated no significant changes in drug content or drug dissolution rate. Hence, improve dissolution characteristics of Simvastatin achieved by increasing its release and solubility through solid dispersion technique.
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