FORMULATION AND IN VITRO EVALUATION OF BUCCAL TABLETS OF CHLORPROMAZINE HCL
Prof. Shital J. Bidkar, *Sadhana S. Ghule, Dr. Dama G. Y.
ABSTRACT
The aim of study was to prepare and characterize buccal tablets of Chlorpromazine HCl. using different Mucoadhesive polymers such as Sodium alginate, PVP K30 and HPMC K100M in combination. six formulations were prepared with varying concentrations of polymers using combination of two polymers in each formulation. Formulations F1 to F3 were composed of PVP K30 and HPMC K100M mixture in polymer mixture ratios of 1:2 to 2:1 where as formulations F4 to F6 were composed of PVP K30 and Sodium Alginate mixture in same polymers mixture ratios. The prepared tablets were evaluated for
physicochemical parameters such as hardness, thickness uniformity, weight variation, surface pH, and moisture absorption studies. The prepared tablets were also evaluated for bioadhesive strength and in vitro drug release. In vitro bioadhesive strength and in vitro release studies showed that formulation F1 containing 1:2 ratio of polymers combination showed optimum bioadhesive and exhibited optimum drug release. The results indicate that the mucoadhesive buccal tablets of Chlorpromazine HCl. may be good choice to bypass the extensive hepatic first pass metabolism with an improvement in the bioavailability of Chlorpromazine HCl. through buccal mucosa.
Keywords: Chlorpromazine HCl, buccal tablets, HPMC, control release, swelling index.
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