Mon, 18 Dec 2017

Review on: Self Micro-Emulsifying Drug Delivery System

Gade Abhishek V1*, K.S. Salunkhe1, S.R. Chaudhari 1, Gadge P.B1, Dighe G.S1, Amit Asati2

1. Department of pharmaceutics Amrutvahini College of Pharmacy, Sangamner, Ahemednagar.

2. Dr. Reddy laboratories limited, Hydrabad


ABSTRACT

The oral delivery of lipophilic drugs has a major challenge because of low aqueous solubility of such drugs. Self-microemulsifying drug delivery systems (SMEDDS) have ability to increase solubility and bioavailability of poorly soluble drugs. Self-micro emulsifying drug delivery systems are isotropic mixtures of oil, surfactant, co-surfactant of co-solvents can be used for the design of formulations in order to improve the oral absorption of highly lipophilic drugs. Self micro-emulsifying drug delivery system can be orally administered in hard or soft gelatin capsule and form fine stable emulsion (oil-in-water emulsion) aqueous dilution owing to the gentle agitation of gastrointestinal fluid. Efficiency of oral absorption of the drug from the SMEDDS depends on formulation elated parameters such as concentration of surfactant, co-surfactant, ratio of oil and surfactant, charge and droplet size. Thus, there are few drug products of the pharmaceutical market formulated as SMEDDS confirming the difficulty of formulating hydrophobic drug compounds in to such formulations. The fact that almost 40% of the new drugs are hydrophobic in nature which are studies with SMEDDS will continue and more drug compounds formulated as SMEDDS will reach pharmaceutical market.

Keywords: Lipophilic, Self micro-emulsifying drug delivery system (SMEDDS), oral absorption, stable in water.


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