Drug Development and Industrial Pharmacy · 2006 · 48 citations · 22 references
PharmacyPharmaceuticsPharmacologyBioavailabilityDrug DeliveryOral Drug DeliveryBioavailability AnalysisDrug DissolutionDrug SolubilityOral BioavailabilityOral Bioavailability EnhancementSolubility EnhancementCyclosporine PharmacokineticsDissolution Rate AnalysisFourier Transform Infrared SpectroscopyOral Drug BioavailabilityPowder X-ray DiffractionSolid Dispersion FormulationSolubility DeterminationX-ray Diffraction Analysis
Solid dispersion containing polyoxyethylene (40) stearate and cyclosporine A was prepared by solvent-melt method and characterized using differential scanning calorimetry, powder X-ray diffraction, and Infrared Fourier Transform Spectroscopy (FTIR). Dissolution of the drug from solid dispersion was dramatically enhanced compared to that from the drug powder alone and physical mixture. In vivo oral bioavailability of cyclosporine A from the solid dispersion in Wistar rats was comparable to that from a commercial product, Sandimmun Neoral (P>0.05). The formulation is stable up to six months under 30 degrees C/RH60% and one year at 25 degrees C/RH 60% when packed in aluminum-polyethylene laminated bags.
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