Formulation and Evaluation of Oro Dispersible Tablets of Ondansetron Hydrochloride by Direct Compression using Superdisintegrants

Abstract

The objective of the present investigation was to prepare oro dispersible tablets of ondansetron hydrochloride, because of its application in emesis condition, fast onset of action and avoidance of water is highly desirable. Tablets were prepared by direct compression using sodium starch glycolate and croscarmellose as superdisintegrants, as the combination of these two agents gives better disintegration of the tablet. Microcrystalline cellulose was used as diluent and mannitol, mint flavor, sodium saccharine to enhance the organoleptic properties of tablets. The tablets were evaluated for weight variation, mechanical strength, in vitro disintegration time, in vivo disintegration time, wetting time, and drug release characteristics. Hardness and friability data indicated good mechanical strength of tablets.  The results of in vitro disintegration time and in vivo disintegration time indicated that the tablets dispersed rapidly in mouth within 3 to 5 seconds. Dissolution study revealed faster release rate of ondansetron hydrochloride from the tablets as compared to pure drug and marketed conventional tablet formulation of ondansetron hydrochloride. It was concluded that superdisintegrants addition technique is a useful method for preparing oro dispersible tablets by direct compression method