Abstract
Administration of drugs through skin has received great attention through the last decade.Hence this study aims to formulate an anti-hypertensive drug losartan as transdermal patch using different bioadhesive polymers such as ethyl cellulose, cellulose acetate, and polyvinyl pyrrolidon,hydroxyl propylemethylcellulose with plasticizers propylene glycol(PG). Patches were prepared though solvent evaporation method, The backing membrane was a non permeable aluminium foil laminated with polyethylene and evaluated for thickness uniformity, Uniformity of weight, Scanning Electron Microscopy, Surface pH,Swelling studies, Drug content uniformity Effect on agingn, skin irritation potential, and In vitro release study.Patches exhibited controlled release over more than 2 hr.It was concluded that patches containing 30 mg of losartane with HPMC (formulation F2),showed moderate swelling, surface pH and controlled drug release, thus can be selected for the development of transdermal patches for effective uses.
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