Nanoemulsions have pulled great aid in research, dosage form design and pharmacotherapy. This is as a result of a number of properties peculiar to nanoemulsions such as ease of preparation, optical clarity, thermodynamic stability and increasing surface area surface area. Another name of nanoemulsions is submicron emulsions which used in as vehicles for the delivery of active pharmaceutical ingredients. Conventional drug delivery systems comply with some of the disadvantages such as low bioavailability and noncompliance. So, to remove these disadvantages nanoemulsions are taken as novel drug delivery system. The main aim behind the development and design of nanocarrier emulsion systems are controlling and/or improving required bioavailability levels of therapeutic agents cannot be overemphasized. Reduction in the droplet sizes to the nanoscale results to some very interesting changes such as in physical properties, optical transparency and unusual elastic behaviour. This review mainly emphasis on the current status of nanoemulsions in the delivery of drugs. The morphology, formulation, characteristics and characterization of nanoemulsions were also addressed.
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