Abstract
The main aim of this study was to formulate and characterize nimodipine solid dispersions using various novel polymers. Solid dispersions were prepared by solvent evaporation method in order to improve the solubility and overall bioavailability of nimodipine. Solubility and dissolution studies indicate that Kolliwax RH 40 is the most suitable polymer. The solubility studies was corresponded with dissolution data and the formulation SD15 was found to be having highest drug release of about 98.96 ± 5.15% in about 90 minutes. In vitro release data from several formulations containing Nimodipine was determined kinetically using different mathematical models like Zero order, First order, Higuchi, and Korsmeyer–Peppas model. XRD and SEM studies indicate no crystallinity in the optimized formulation SD15. FTIR studies suggested good drug excipient compatibility between all components of prepared formulation. These results confirm the viability of enhancing the solubility of nimodipine by formulating the drug as solid dispersions in Kolliwax.
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