期刊
EUROPEAN JOURNAL OF PHARMACEUTICAL SCIENCES
卷 39, 期 1-3, 页码 164-174出版社
ELSEVIER
DOI: 10.1016/j.ejps.2009.11.011
关键词
Supercritical antisolvent; High pressure stirred bed mixing; Dissolution rate enhancement; Micro-mixing
资金
- National Science Foundation (NIRT) [DMI-0506722]
- Harrison School of Pharmacy, Auburn University
Microparticles of a poorly water-soluble model drug, nevirapine (NEV) were prepared by supercritical antisolvent (SAS) method and simultaneously deposited on the surface of excipients such as lactose and microcrystalline cellulose in a single step to reduce drug-drug particle aggregation. In the proposed method, termed supercritical antisolvent-drug excipient mixing (SAS-DEM), drug particles were precipitated in supercritical CO2 vessel containing excipient particles in suspended state. Drug/excipient mixtures were characterized for Surface Morphology, Crystallinity, drug-excipient physico-chemical interactions, and molecular state of drug. In addition. the drug content uniformity and dissolution rate were determined. A highly ordered NEV-excipient mixture was produced. The SAS-DEM treatment was effective in overcoming drug-drug particle aggregation and did not affect the crystallinity or physicochemical properties of NEV. The produced drug/excipient mixture has a significantly faster dissolution rate as compared to SAS drug microparticles alone or when physically mixed with the excipients. (C) 2009 Elsevier B.V. All rights reserved.
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