Tropical Journal of Pharmaceutical Research

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Original Research Article

Stability Testing of Beclomethasone Dipropionate Nanoemulsion

Mohammad Sarfaraz Alam, Mohammad Sajid Ali*, Mohammad Intakhab Alam, Tarique Anwer and Mohammed Mohsen A Safhi

College of Pharmacy, Jazan University, Jazan, Saudi Arabia

*For correspondence: Email: mdsajidaali@gmail.com; Tel: +966591668359

Received: 23 February 2014 Revised accepted: 15 November 2014

Tropical Journal of Pharmaceutical Research, January 2015; 14(1): 15-20

http://dx.doi.org/10.4314/tjpr.v14i1.3

Abstract

Purpose: To perform stability studies on a nanoemulsion formulation containing beclomethasone dipropionate (BD) and prepared by spontaneous emulsification method.

Method: A nanoemulsion (o/w) containing BD was prepared using eucalyptus oil, Tween-40, ethanol and distilled water. The nanoemulsions were characterized by droplet size, pH, viscosity, conductivity and refractive index. Stability studies were performed according to International Council on Harmonization (ICH) guidelines over a period of 3 months. Droplet size, pH, viscosity, conductivity and refractive index were determined monthly for 3 months. The shelf-life of the nanoemulsion formulation was determined by accelerated stability testing.

Results: The droplet size, conductivity, viscosity, pH and refractive index of the optimized formulations did not change significantly (p ≥ 0.05) after 3 months of storage at room temperature (25 ºC). The shelf life was 1.83 years at room temperature.

Conclusion: The study demonstrates that the physical and chemical stability of BD is enhanced when it is formulated as a nanoemulsion.

Keywords: Nanoemulsion, Beclomethasone dipropionate, Shelf-life, Accelerated stability, Viscosity, Conductivity, Refractive index