FORMULATION STRATEGY FOR DISSOLUTION ENHANCEMENT OF SIMVASTATIN

The present work aim was “Formulation Strategy for Dissolution Enhancement of Simvastatin”. Simvastatin is lipid lowering drug which is known as HMG CoA reductase. The objective of this study was to increase the solubility of poorly water soluble drug, namely simvastatin, by the formation of solid dispersion and complex and also using the microwave induction technique on these formations. For solid dispersion method dispersion carrier used were poloxamer 407 and gelucire 44/14. The fusion method was used to prepare the dispersions. For inclusion complexation method β-cyclodextrin derivative of cyclodextrin was used to prepare complex with drug. Kneading method was used for formulation. After completion of these two techniques these polymers were used for the microwave induced fusion method. All the ratio of drug and polymer were used to heat for different time interval. These samples were used for solubility measurement. In the solid dispersion technique, simvastatin show higher increase in solubility with gelucire 44/14 in the ratio of 1:5 as compare to poloxamer 407. In the microwave induced fusion method simvastatin show higher solubility with simvastatin with gelucire 44/14 after 10 mins time interval as compare to poloxamer 407 and β-cyclodextrin. Solubility of simvastatin increased higher with gelucire 44/14 by using microwave induced fusion method as compare to other technique. By using gelucire 44/14 with simvastatin it show 94% increase in solubility of simvastatin as compare to pure drug in water.