Prasad Bingidoddi, V. J. Marabathuni, Naidu Narapusetty
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Formulation development & invitro evaluation of efavirenz cyclodexprin complexes im-mediate release tablets
The study was designed to investigate the effect of cyclodextrins (CDs) on the solubility, dissolution rate, and bioavailability of efavirenz by forming inclusion complexes. Prepared inclusion complexes were characterized by Fourier transform infrared spectroscopy, differential scanning calorimetry (DSC), and X-ray diffraction (XRD) studies. In vitro dissolution study was performed using phosphate buffer pH 6.4, distilled water, and HCl buffer pH 1.2 as dissolution medium. Among all efavirenz–cyclodextrins complexes, efavirenz–DM-β-CD inclusion complex (1:3) prepared by coprecipitation method showed 1.53-fold and 4.11-fold increase in absorption along with 2.1-fold and 2.97-fold increase in dissolution rate in comparison with Pletoz-50 and pure efavirenz, respectively.
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