Abstract

EMULSION, MICRO EMULSION AND NANO EMULSION: A REVIEW

K. Divya*, R. Divyasree, M. Vamsidhar, K. Bhavani, S. B. Bhanja, M. Sudhakar, Dibya Sunder Panda and B. B. Panigrahi

ABSTRACT

Lipid dosage forms are attractive delivery systems for hydrophobic drug molecules. Emulsion is a biphasic liquid dosage form. These are of two types, oil in water and water in oil, it is a conventional method. Now-a-days novel dosage forms are used like microemulsions and nanoemulsions. Emulsion is one of the most popular systems since many decades as they provide better bioavailability and response. Pharmaceutical applications of emulsions are widened especially after micro and nano-emulsion emergence. Novel drug delivery system is commonly used having better approach towards other dosage forms. This articlesummarises the comparative aspects like definition, theories, types, methods of preparations, advantages, disadvantages and methods of analysis of emulsion, micro-emulsion and nano-emulsion.

Keywords: Emulsion, Micro emulsion, Nano emulsion, Surface tension, Zeta potential.