Microemulgel-based Hydrogel of Diclofenac Sodium using Lipidium sativum as a Gelling Agent

Abstract

Aim was to prepare hydrogel containing diclofenac sodium using Lipidium sativum as a gelling agent within a micro emulsion-based system. The oil phase consisted of soybean oil, while surfactants, namely Span 80 and Tween 20, were employed in the formulation. Absolute ethanol was used as a co-surfactant and were characterized by a phase diagram. The in-vitro permeation information is derived from the Franz diffusion. Different microemulsion was designed by screening of various components by performing pseudo-ternary phase diagram and then a solubility study. From this psudo-ternary phase diagram was constructed. In-vitro permeation data was screened from these results the topical delivery of diclofenac sodium microemulsion was clearly confirmed as being by means of w/o microemulsion systems. The optimized formulation of the microemulsion consist of soya bean oil 1.25 mL, span:Tween 20 : 2.5 mL, ethanol 1-mL, water 0.2 mL, L. sativum mucilage and it is compared with the marketed preparation. So, the micro emulsion-based hydrogel of diclofenac using L. sativum mucilage can be used as a gelling agent for a topical drug delivery system.