NOVEL DRUG DELIVERY SYSTEM-NANOEMULSIONS: A RECENT REVIEW

Abstract

Nanoemulsions are the emulsions of O/W type, having the size range of several microns. Nanoemulsions are clear, thermodynamically stable, isotropic liquid mixtures of oil, water, surfactant and co-surfactant. They are prepared by using the surfactants which are considered safe for the human use and approved by the FDA. These types of emulsions have higher surface area and hence can easily penetrate through the skin. They are also non toxic and non irritant in nature and can be used in the animals and veterinary purpose. Nanoemulsions can be prepared by the high pressure homogenization and microfluidisation technique. Nanoemulsions have been reported for the delivery of drugs to cell culture, cancer therapy and as disinfectants. Nanoemulsion show great promise for the future of cosmetics, diagnostics, drug therapies and biotechnologies.

KEY WORDS: Nanoemulsions, O/W type, High-pressure equipment, Submicron