Formulation and Evaluation of Floating Tablets of Sitagliptin with Extract of Triphala
The aim of the present work is to formulate, optimize and evaluate hydrodynamically balanced antidiabetic system incorporated with sitagliptin and phytochemical constituents of Triphala extract for the treatment of constipation associated with diabetes. The Triphala churna of two different ratios, 1:1:1 (TC1) and 1:2:4 (TC2) were subjected to hot percolation using Soxhlet apparatus using methanol as solvent. The floating matrix tablets of Sitagliptin with methanolic Triphala extract was prepared by wet granulation technique using HPMC K4M as polymer, starch/honey as binder and sodium bicarbonate & citric acid as effervescent agents by 24 factorial design. The compatibility studies showed that there is no chemical interaction between the drug, polymer and the excipients used in the tablets. The independent variables are drug & Triphala extract ratio (X1), Triphala proportion (X2), binder used for granulation (X3), and amount of effervescent excipients used (X4). The dependent variables are hardness (Y1), buoyancy lag time (Y2), total floating time (Y3), in-vitro drug release (Y4), and T50% (Y5). The prepared floating tablets were subjected to all post compression parameters such as hardness, friability, swelling capacity, buoyancy, total floating time, drug content & in-vitro drug release and were found to be within normal limits. Based on drug content, buoyancy lag time and in-vitro drug release the formulations F14 and F16 were selected for in-vivo study of the formulation.
Keywords: Triphala, Sitagliptin, honey, floating tablet.
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