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Recent Patents on Nanotechnology


ISSN (Print): 1872-2105
ISSN (Online): 2212-4020

Review Article

Self-microemulsifying Drug Delivery System for Problematic Molecules: An Update

Author(s): Dilpreet Singh, Ashok K. Tiwary and Neena Bedi*

Volume 13 , Issue 2 , 2019

Page: [92 - 113] Pages: 22

DOI: 10.2174/1872210513666190619102521

Price: $65


Background: The poor bioavailability of a problematic molecule is predominantly due to its high lipophilicity, low solubility in gastric fluids and/or high fist pass metabolism. Self microemulsifying drug delivery system (SMEDDS), a lipidic type IV nano-formulation has been of interest in the field of pharmaceutical research due to its potential for tailoring the physicochemical properties of pharmaceutical molecules.

Methods: This review provides insights on various recent innovations and reports from the past seven years (2012-2019) of self-emulsifying formulations for the delivery of various types of poorly soluble drugs, phytoconstituents and high molecular peptides and gives exhaustive details of the outcome of the endeavors in this field.

Results: Various types of innovative formulations have been molded from SMEDDS like selfemulsifying powders, granules, tablets, pellets, eutectic and cationic formulations. Till date, many research reports and patents have been filed on self-emulsifying dosage forms and many formulations have gained US-FDA approvals which are summarized in the review article.

Conclusion: This review content highlighted the increasing scope of SMEDDS in augmenting the physiochemical properties of an API, the variegated formulation types and the attributes of API that can be improved by SMEDD based formulations.

Keywords: Solubility enhancement, bioavailability enhancement, SMEDDS, phytoconstituents, peptides, supersaturation, patents.

Graphical Abstract
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