Solid Self Emulsifying Drug Delivery System: A Novel Approach
Pushpa B. Salunke*, Rajesh B. Nawale, Amrapali B. Jadhav
The new chemical entities discovered by the pharmaceutical industry up to 40% to 50% are poorly soluble or lipophilic compounds, which leads to poor oral bioavailability. Currently a number of technologies are available to deal with the poor solubility, dissolution rate and bioavailability of insoluble drugs. Recently much attention has been paid to lipid based formulations with particular emphasis on self emulsifying drug delivery system (SEDDS), to improve the oral bioavailability of lipophilic drugs. Self emulsifying formulations are mixtures of oils and surfactants, ideally isotropic, and sometimes containing co-solvents, which emulsify spontaneously to produce fine oilin- water emulsion when introduced into aqueous phase under conditions of gentle agitation. The present review examines the recent advances in Solid SEDDS (S-SEDDS) with regard to the selection of lipid systems for current formulations, solidification techniques by adsorbing agents and the development of solid SE (self-emulsifying) dosage forms and their related problem.
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