期刊
ADVANCED DRUG DELIVERY REVIEWS
卷 60, 期 6, 页码 625-637出版社
ELSEVIER
DOI: 10.1016/j.addr.2007.10.010
关键词
lipid-based formulations; self-emulsifying drug delivery systems; excipients; lipid formulation classification system; formulation strategies; surfactants; self-dispersion
Oral lipid-based drug delivery systems may include abroad range of oils, surfactants, and cosolvents. This diversity makes comparison of lipid-based formulations difficult. Although the relationship between formulation and drug absorption is understood at a conceptual level, performance in vivo cannot be predicted with confidence at present. The Lipid Formulation Classification System (LFCS) identifies the factors which are likely to affect performance in vivo. There is now a need to establish Performance criteria which will facilitate in vitro-in vivo correlation studies. In this review we discuss the properties of excipients, and identify criteria for selection of excipients for lipid-based formulations. Excipients are discussed in the context of the LFCS, our existing knowledge of the fate of these materials during dispersion and digestion, and the likely consequences of their use in formulations. We outline the formulation strategies that can be used for each type of lipid formulation, and Suggest a framework for the in vitro testing of each type. Finally we address the choice of lipid formulations in relation to the physicochemical properties of the drug. (C) 2007 Elsevier B.V. All rights reserved.
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