FORMULATION AND IN VITRO – IN VIVO PHARMACOKINETIC EVALUATION OF CARDIOVASCULAR DRUG LOADED PULSATILE DRUG DELIVERY SYSTEMS
Keywords:Liquid Solid composite, Compresses tablet, Optimization, Disintegration time, wetting time
Objective: This study is to formulate Nebivolol into a Pulsatile liquid solid composite compression coated tablet, which will delay the release of the drug in early morning hypertension condition.
Methods: The liquid solid composite tablet was formulated and compressed with ethyl cellulose coating polymer. The percent invitro drug release of the liquid solid composite compressed tablet was tested. Based on disintegration time and wetting time, the LCS2, LCS3, LSC6, LCS7 and LCS12 formulations were found to be the optimized solid liquid compacts fast dissolving core tablet formulations, which may be excellent candidates for further coating with polymer to transfer into press coated pulsatile tablet formulations. Coating the core tablet with varying ethyl cellulose concentrations resulted in five different formulations of pulsatile press-coated tablet (CT1, CT2, CT3, CT4, CT5). in vitro drug release, in vitro release kinetic studies, in vivo pharmacokinetic and stability tests were all performed for the prepared pulsatile press coated tablet.
Results: CT3 tablets are coated with ethyl cellulose polymer, which shows maximum controlled drug release from the core tablet i.e. 96.34±1.2% at 8th h. It shows there was an efficient delay in drug release form core tablet i.e. upto 3 h, followed by the maximum amount of drug release of 96.34±2.4 at 8h.Which shows the core drug will be more efficiently protected from the gastric acid environment 1.2 pH, duodenal environment 4.0 pH and release the drug only in the small intestine
Conclusion: According to the findings, CT3 Pulsatile press coated tablet increased the bioavailability of Nebivolol by 3.11 percent.
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