PREPARATION AND IN-VITRO EVALUATION OF DICLOFENAC SODIUM TRANSDERMAL PATCHES
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ABOUT AUHTOR
SUSMITA DAS*
Department of Pharmaceutical Technology,
Jadavpur University,
West Bengal, India
*sdas53662@gmail.com
ABSTRACT:
Objectives: The aim of the present study was to develop transdermal matrix patches with a fixed ratios of polyvinylpyrrolidone (PVP) and ethylcellulose (EC), containing the drug diclofenac sodium and to perform the physicochemical, in vitro relese pattern evaluation of the prepared patches. The prospective objective was the demonstration that the system provides the delivery of drug at a controlled rate across intact skin to achieve a therapeutically effective drug level for a longer period of time from transdermal patches.
Methods: In this study, matrix-type transdermal patches containing diclofenac sodium were prepared using different ratio of polyvinylpyrrolidone (PVP) and ethylcellulose (EC) by solvent evaporation technique. The drug matrix film of PVP and EC was casted on a polyvinylalcohol backing membrane. All the prepared formulations were subjected to physical studies (moisture content, moisture uptake, and flatness), and in-vitro release kinetics and permeation studies were performed across cadaver skin using a modified diffusion cell.
Results and conclusion: Variations in drug release profiles among the formulations studied were observed. From the formulated patches FA 1, containing PVP/EC in ratio of 1:3 shows sustained release action with 38% release after 24 h and 10 µg of drug permeation accross 1 cm2 of patch area. Hence, it can be reasonably concluded that diclofenac sodium can be formulated into the transdermal matrix type patches to sustain its release characteristics for manufacturing transdermal patches of diclofenac sodium