alexa Abstract | Statistical optimization of sustained release venlafaxine HCl wax matrix tablet

Indian Journal of Pharmaceutical Sciences
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Research Paper Open Access

Abstract

The purpose of this research was to prepare a sustained release drug delivery system of venlafaxine hydrochloride by using a wax matrix system. The effects of bees wax and carnauba wax on drug release profile was investigated. A 3 2 full factorial design was applied to systemically optimize the drug release profile. Amounts of carnauba wax (X 1 ) and bees wax (X 2 ) were selected as independent variables and release after 12 h and time required for 50% (t 50 ) drug release were selected as dependent variables. A mathematical model was generated for each response parameter. Both waxes retarded release after 12 h and increases the t 50 but bees wax showed significant influence. The drug release pattern for all the formulation combinations was found to be approaching Peppas kinetic model. Suitable combination of two waxes provided fairly good regulated release profile. The response surfaces and contour plots for each response parameter are presented for further interpretation of the results. The optimum formulations were chosen and their predicted results found to be in close agreement with experimental findings.

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Author(s): MR Bhalekar AR Madgulkar DD Sheladiya SJ Kshirsagar ND Wable SS Desale

Keywords

Venlafaxine HCl, bees wax, carnauba wax, sustained release, factorial design, response surface

 
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