FORMULATION AND CHARACTERIZATION OF CLARITHROMYCIN FLOATING TABLETS BY USING VARIOUS POLYMERS

Abstract

The present study outlines a systematic approach for designing and development of Clarithromycin floating tablets to enhance the bioavailability and therapeutic efficacy of the drug. Floating tablets of Clarithromycin have shown sustained release there by proper duration of action at a particular site and are designed to prolong the gastric residence time after oral administration. Different formulations were formulated by using direct compression technique. A floating drug delivery system (FDDS) was developed by using sodium bicarbonate as gas-forming agent and Chitosan, HPMC K4M and Ethyl cellulose as polymers. The preformulation parameters like Organoleptic properties, angle of repose, bulk density, tapped density, Hausners ratio, carrs index and compressibility index of pure drug was evaluated and complied with the pharmacopoeial specifications. FTIR studies showed there was no interaction between drug and polymer. The prepared tablets were evaluated in terms of their physical characteristics, post compression parameters in vitro release and buoyancy lag time the results of the in vitro release studies showed that the optimized formulation (C7) could sustain drug release for 12 hrs by using Ethyl cellulose in the concentration of 50 mg. The in vitro drug release followed Kors Mayer peppas release. Results revealed that the floating formulation of the Clarithromycin is the best formulation to obtain better therapeutic effect and Ethyl cellulose at a concentration of 50mg up to some extent it increases the Bioavailability of the drug to retain the dosage form on the desired site for effective period of the time.