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Objective: The objective of present study is to develop and evaluate the elastic liposomes of metronidazole so as to provide the sustained release and improve its bioavailability. Methods: Elastic liposomes were prepared by rotary evaporation method using Span 80 and Span 60 as a surfactants. The prepared elastic liposomes were evaluated for entrapment efficiency, vesicle size, In vitro drug release. Results: The drug release profiles from different elastic liposomes-in-vehicle formulations were in agreement with the physicochemical properties of the formulations. The formulation prepared showed an average vesicle size 185.4nm. The amount of drug entrapped into the elastic liposomes formulations was determined. The entrapment efficiency was found to be 73.45±0.78 %. A good amount of drug was entrapped in the liposome formulations prepared. Based on different parameters formulations of batch TG2 was found to be the best formulations. Stability study was performed on the selected formulation TG2. When the regression coefficient values of were compared, it was observed that ‘r’ values of first order was maximum i.e. 0.993 hence indicating drug release from formulations was found to f ollow Korsmeyer Peppas model release kinetics Conclusion: These results indicate that elastic liposome can function as probable drug delivery systems to enhance transdermal permeation of metronidazole for treating the topical infections.

Development and Characterization of Elastic Liposomes of Metronidazole for the Treatment of Bacterial Infection