Preparation of monolithic osmotic tablet of quercetin loaded by solid dispersion

doi:10.5246/jcps.2015.06.049

Abstract

Abstract:

The objective of this study was to prepare monolithic osmotic tablet of quercetin for controlled drug release. Quercetin-PVP solid dispersion was prepared to enhance its solubility and dissolution rate. Solid dispersion, suspending agents, osmotic agents and other conventional excipients were used as tablet core composition and cellulose acetate (CA) with plasticizer as release controlling membrane. Different formulation variables, the amounts of PEO (polyethylene oxide), NaCl, plasticizer, and coating weight gain were optimized to gain the optimum formulation. The mechanism of drug release from monolithic osmotic tablet was also discussed. The optimal monolithic osmotic pump tablet could deliver quercetin at the rate of approximate zero-order up to 12 h, and the cumulative release was 90.74%. The developed monolithic osmotic system for quercetin loaded by solid dispersion was found to be a promising approach for controlled release of poorly-water soluble drug candidates.

Key words: Quercetin, Solid dispersion, Monolithic osmotic tablet, Controlled drug delivery system

CLC Number:

R944

Supporting:

Haijun Hao, Youzhi Jia, Hongqin Zhang, Ru Han, Xueping Wang, Limei Han, Jianxin Wang. Preparation of monolithic osmotic tablet of quercetin loaded by solid dispersion[J]. Journal of Chinese Pharmaceutical Sciences, 2015, 24(6): 383-392.

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