Formulation and In Vitro Evaluation of Bilayer Tablets of Lansoprazole and Amoxycillin Trihydrate for the Treatment of Peptic Ulcer
Abstract
The present work involves the formulation development, optimization and In-vitro evaluation of bilayer tablet containing Lansoprazole in the immediate release layer and Amoxycillin in the sustained release layer, using sodium starch glycolate as a super disintegrant for the immediate release layer and the hydrophilic matrix HPMC K100M, hydrophobic matrix Ethyl cellulose are used in the sustained release layer. Bilayer tablet showed as initial burst effect to provide dose of immediate release layer Lansoprazole to control the acid secretion level and the sustained release of Amoxycillin for 24 hours. Immediate and sustained release tablets were formulated by wet granulation method because of the poor flow property of the blends. The prepared bilayer tablet was evaluated for their precompression parameters, physical characteristics like hardness, friability, uniformity of weight, uniformity of drug content, swelling index, In-vitro floating studies and In-vitro drug release. The release of the lansoprazole from the immediate release layer was found to be 97.46 ± 0.15% in 15minutes. The release of Amoxycillin Trihydrate for the sustained release floating layer was found to be 98.25 ± 0.14% in 12 hours. Lansoprazole potentiate the effect of Amoxycillin. Hence the bilayer tablets of Lansoprazole and Amoxycillin were used to improve patient compliance towards the effective management of ulcer. Keywords: bilayer tablet, Lansoprazole, and Amoxycillin, sustained release
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