Research Journal of Pharmaceutical, Biological and Chemical Sciences
ISSN: 0975-8585 Research Journal of Pharmaceutical, Biological and Chemical Sciences Formulation and Evaluation of Floating Drotaverine Hydrochloride Tablets Using Factorial Design Om Prakash*, S Saraf, M Rahman, Neeraj Agnihotri, and Vinay Pathak Department of Industrial chemistry, Integral University, Lucknow. Uttar Pradesh, India. ABSTRACT The main aim of this study was to optimize and evaluate the floating tablets of Drotaverine HCl that prolong the gastric residence time, increasing drug bioavailability and control pain for longer duration by oral administration. A floating drug delivery system(FDDS) was developed using gas forming agent like sodium bicarbonate, citric acid polymers like hydroxypropyl methyl cellulose(HPMC), Sod CMC, Carbopol-934P, PVP K-30. In 32 factorial design amount of HPMC(X1) and gas generating agents(X2) were selected as independent variable and % drug release for 30min,1h, 2h,4h,6h, 8h,12h, 16h , 24h and floating lag time (FLT) were taken as dependent variable. The floating tablet formulations were evaluated for Bulk density (gm/cm3), Tapped density(gm/cm3), Hausner ratio(HR), Carr index, Angle of repose, flow property, assay, in-vitro drug release, hardness, friability,weight variation. The results of in vitro release studies showed that the optimized formulation (F9) could sustain drug release (98.74%) for 24h and remain buoyant for more than 24h. The combination of hydrophilic (HPMC) and hydrophobic (carbopol-934P) polymer provides a better option for 24h release action, bioavailability, stability of tablets at 400C/75%RH, of optimized formulation was carried for one month and no significant change was observed. Keywords: floating drug delivery system(FDDS), Drotaverine HCl, gas generating agents, floating lag time (FLT), hydrophilic (HPMC) and hydrophobic (carbopol-934P) polymer.
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