Abstract
Delivery of drug through topical route, delivers most convenient and novel approach. The Skin can offer several advantages as a route of drug administration although its barrier nature makes it difficult for most drugs to penetrate in to and permeate through it. During the past decades there has been a lot of interest in lipid vesicles as a tool to improve topical drug delivery. Vesicular system such as liposomes, niosomes, ethosomes and elastic deformable vesicles provide an alternative for improved skin drug delivery. In fact vesicles can act as drug carriers controlling drug release. The Research findings were intended to develop sustained release of aceclofenac niosomes formulations in order to reduce gastrointestinal disturbances and to provide better effect when applied topically. Niosomes of aceclofenac was prepared by modified ether injection method using different ratio of surfactants (Tween 20, 40, 60 & 80) with cholesterol and drug. The developed formulations were optimized based on the high entrapment efficiency and in-vitro release studies. Optimized batch was selected and made in to topical niosomal gel using gelling agents like carbopol and sodium carboxy methyl cellulose. Formulation were evaluated for various parameters like vesicle shape, vesicle size, entrapment efficiency, drug content, compatibility studies, in-vitro release studies and stability studies. Ether injection method was found to be most satisfactory in terms of niosome particle size, drug entrapment efficiency was found to be 88.68 ±0.64 % and in-vitro release studies showed 40% of sustain drug release at the end of 8 hrs of study when compared with marketed formulation. Hence, the formulated niosomal topical gel was found to be a better alternative when compared to the marketed formulation in terms of better efficacy, bioavailability and permeation.
Published Version
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