Abstract
ABSTRACTGastroretentive floating drug delivery system is utilised to target drug release in the stomach or to the upper part of intestine. Lansoprazole is proton pump inhibitor intended for oral administration used as antiulcer agent. The present investigation involved formulation and evaluation of Gastroretentive floating tablets of Lansoprazole for prolongation of gastric residence time with a view to deliver the drug at sustained and controlled manner in gastrointestinal tract. The tablets of Lansoprazole were prepared by direct compression method using gas generating agent and different polymer combinations (HPMCK4M, HPMC K100M, Psyllium husk) . The prepared tablets of Lansoprazole were evaluated for hardness, thickness, friability, weight variation, drug content uniformity, buoyancy lag time, total floating time, swelling index, in-vitro dissolution study. The varying concentration of gas generating agent and polymers were found to affect on in-vitro drug release, floating lag time and swelling index. In vitro drug release of floating Gastroretentive tablet of Lansoprazole shown that the formulation F2 was found to be the best formulation as it releases 97.9% Lansoprazole in a controlled manner for extended period of time (upto 12 hrs.)Keywords: Lansoprazole, Gastroretentive, floating tablet, total floating time.
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