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Recent Advances in Drug Delivery and Formulation

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ISSN (Print): 2667-3878
ISSN (Online): 2667-3886

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Review Article

A Comprehensive Insight on Self Emulsifying Drug Delivery Systems

Author(s): Renu Kadian and Arun Nanda*

Volume 16, Issue 1, 2022

Published on: 24 December, 2021

Page: [16 - 44] Pages: 29

DOI: 10.2174/2667387815666211207112803

Price: $65

Abstract

Background: The oral route is a highly recommended route for the delivery of a drug. But most lipophilic drugs are difficult to deliver via this route due to their low aqueous solubility. Selfemulsifying drug delivery systems (SEDDS) have emerged as a potential approach of increasing dissolution of a hydrophobic drug due to spontaneous dispersion in micron or nano sized globules in the GI tract under mild agitation.

Objective: The main motive of this review article is to describe the mechanisms, advantages, disadvantages, factors affecting, effects of excipients, possible mechanisms of enhancing bioavailability, and evaluation of self-emulsifying drug delivery systems.

Results: Self emulsifying systems incorporate the hydrophobic drug inside the oil globules, and a monolayer is formed by surfactants to provide the low interfacial tension, which leads to improvement in the dissolution rate of hydrophobic drugs. The globule size of self-emulsifying systems depends upon the type and ratio of excipients in which they are used. The ternary phase diagram is constructed to find out the range of concentration of excipients used. This review article also presents recent and updated patents on self-emulsifying drug delivery systems. Self-emulsifying systems have the ability to enhance the oral bioavailability and solubility of lipophilic drugs.

Conclusion: This technique offers further advantages such as bypassing the first pass metabolism via absorption of drugs through the lymphatic system, easy manufacturing, reducing enzymatic hydrolysis, inter and intra subject variability, and food effects.

Keywords: Bioavailability, lymphatic transport, mechanism, permeation study, poorly aqueous soluble drugs, selfemulsifying drug delivery systems.

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