Formulation and Characterization of Novel Transfersomes Gel for Enhance TDDS of Losartan Potassium

Abstract

A transferosome is the first generation of an elastic liposome prepared from phospholipids and edge activators. An edge activator is often a single-chain surfactant with a high radius of curvature that destabilizes the lipid bilayers of vesicles and increases the deformability of the bilayers, thereby making the vehicle ultra-deformable. Losartan potassium is an orally active angiotensin-II receptor antagonist used in the treatment of hypertension due to mainly blockade of AT1 receptor. It is freely soluble in water, slightly soluble in acetonitrile, and soluble in isopropyl alcohol. The aim of the present study was to investigate the potential of transfersomal gel formulations for transdermal delivery of losartan potassium by reverse phase evaporation method. Characterization of transfersomes gel performed by vesicle size, pH measurements, drug content, entrapment efficiency, in vitro drug diffusion study, spreadability and stability study. In the formulations pH is found to be around 6.8 to 6.9, pH is found in the range of 6 which is compatible with skin. In the formulations spreadability is found to be around 6.75 to 10.11 g m cm/sec. The prepared gel containing losartan potassium-loaded transfersomal formulation was optimized and can be use for topical preparation. The results were obtained which showed that transfersomal gel was a promising candidate for transdermal delivery with targeted and prolonged release of a drug. It also enhances skin permeation of many drugs.
 Keywords: Transferosome gel, Losartan potassium, Antihypertensives, Reverse phase evaporation method

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