ABSTRACT
The conventional dosage forms stay in the stomach for 0.5-2 hours and passes to small intestine and where it gets absorbed within 3-6 hours. Therefore difficult to adjust release retardation and stomach retention of drug for longer period of time. The present research work was attempted to formulate and evaluate the floating tablet with biphasic release of metoprolol succinate. Metoprolol succinate bioahesive gastric drug delivery system was prepared using bioadhesive polymer PEO, Hydrophylic polymer (Carbopol 71G, HPMC E15, Methacrylic acid, Pectin, Carragenan and Guargum) and gas forming agent Sodium bicarbonate. Metoprolol succinate bioahesive gastric drug delivery system was proved to be attained the effective plasma concentration higher than the Marketed formulation. This is due to retaining metoprolol succinate in the stomach (Where it absorbed more) by means of floating and bioadhesive property of the polymer. Metoprolol succinate bioahesive gastric drug delivery system using PEO and HPMC E15 polymers could be effective sustained release formulation.
ABSTRACT
The aim of the present research work is to develop bilayer tablet dosage form containing combination of immediate and sustained release layer prepared using Glibenclamide and Metformin Hydrochloride respectively for the treatment of Type-11 diabetes mellitus. Immediate release of glibenclamide granules was prepared with different superdisintegrant. Metformin hydrochloride sustained release granules were prepared by non-aqueous wet granulation technique. Both pre-compression and post compression parameters were analyzed for all the tablets. Bilayer tablets was formulated using croscarmellose sodium for immediate release of Glibenclamide showed 99.94% of release in 30 minutes and using hydrophilic HPMC K100 and hydrophobic Ethyl cellulose in the ratio of 1:1 released 99.90% of Metformin hydrochloride for the period of 13 hours. From this research work it is evident that the formulated bilayer tablet has ability to release the Glibenclamide immediately and Metformin hydrochloride for longer period of time, which can be used for treatment of type11 diabetes mellitus compared to Marketed formulation.