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Solid Carriers for Improved Solubility of Glipizide in Osmotically Controlled Oral Drug Delivery System Publisher Pubmed



Mehramizi A1, 2 ; Alijani B1 ; Pourfarzib M3 ; Dorkoosh FA4 ; Tehrani MR1, 5
Authors

Source: Drug Development and Industrial Pharmacy Published:2007


Abstract

The purpose of this study was to increase the solubility of glipizide (gli) by solid dispersions SDs technique with polyvinylpyrrolidone (PVP) in aqueous media. The gli-PVP solid dispersion systems was prepared by physical mixing or spray drying method, and characterized by differential scanning calorimetry (DSC), X-ray powder diffraction (XRD) analysis, Fourier transformation-infrared spectroscopy (FT-IR) and scanning electron microscopy (SEM). The elementary osmotic pumps (EOPs) were prepared with gli-PVP complex and the effect of the PVP percentages on the enhancing of gli dissolution rate was studied. The influences of various parameters e.g., drug- PVP ratio, level of solubility modifier, coating weight gain and diameter of drug releasing orifice on drug release profiles were also investigated. The solubility and dissolution rates of gli were significantly increased by solid dispersion using spray dried method as well as their physical mixture. The obtained results indicated that gli-PVP solid dispersion system has suitable solubility behavior in EOP tablets. Copyright © Informa Healthcare USA, Inc.
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