The aim of this study was to prepare ODT of taste masked levocetrizine dihydrochloride by using ion exchange resin. Levocetrizine Dihydrochloride is bitter in taste, Kyron T-134 a weak cationic exchange resin was used to mask the bitter taste of the drug. The ODTs were prepared by using drug-resin (DRC) complex using batch process. Compression of ODTs was done by using direct compression method with the technique of addition of superdisintegrants. Central composite design (CCD) was applied as an optimization technique. FTIR and DSC studies indicated drug and excipients were compatible with each other. The prepared orodispersible tablet blend and tablets were evaluated for various pre-compression and post-compression parameters. The Batch LH3 was given as optimized batch by central composite design. This optimized batch LH3 was passed all the pre-compression and post- compression parameters. The prepared ODTS showed successfully rapid onset of action with decrease in disintegration time 26 sec and %drug released was found to be 98.26%. It was concluded that levocetrizine dihydrochloride ODTs were prepared successfully by taste masking method using Kyron T-134 ion exchange resin and croscarmellose sodium as Superdisintegrant using CCD. AS per CDER guidelines, it shows DT within 5-30 sec.

Purpose- The present study was to develop an oral push-pull osmotic pump tablet of vildagliptin, DPP-IV inhibitor drug; which is BCS class I drug. Method- The tablets were prepared by the wet granulation method using polyox and osmotic agent NaCl. The granules were compressed into bilayered tablet by conventional compression machine. The bilayered core osmotic tablets were coated with cellulose acetate in a conventional pan coating. In-vitro dissolution was evaluated using USP dissolution apparatus II in 0.1 N HCl pH 1.2 buffers for 2 hrs and phosphate buffer pH 7.5 for 22 hrs respectively. The formulated optimized batch VP1 were kept to stability studies for 3 months. Result- The formulated optimized batch VP1 of PPOP tablet shows 2hrs lag time with zero order release kinetic. In –vitro drug release was obtained 91.45 % up to 22hrs respectively. Polyox in push-pull layer along with osmotic agent and cellulose acetate controlled the drug release pattern from formulated PPOP tablet. No significant changes were observed upto the period of 3 months of storage during stability study. Conclusion- The PPOP tablet of vildagliptin was able to deliver the drug in controlled pattern over a long period of time by the process of osmosis. Conventional compression and pan coating method can be used to prepare PPOP tablet successfully.