Formulation and optimization of dermatological dosage form for comparative in-vitro evaluation of semisolid bases

Abstract

The aim of this study was to improve the permeation of Diclofenac Sodium. Permeation studies were carried out in - vitro using cellophane membrane. Topical formulations of diclofenac sodium were prepared by using various polymers. Gel, cream and ointment of the drug were prepared with polymers and the formulations were subjected for evaluation. Gel formulations were containing carbopol 940, triethanolamine, and preservatives. Cream was formulated by using stearic acid, glycerin, lanolin and preservatives. Ointment was also formulated by using the ingredients cetostearyl alcohol, hard paraffin, white soft paraffin and wool fat. In-vitro permeation studies by using cellophane membrane in diffusion cell revealed better permeation characteristics of diclofenac sodium. These types of topical dosage forms could give sustained delivery of drug on to the skin, so they are interesting promises to improve skin absorption of non steroidal anti-inflammatory drugs and to prevent side effects associated. The Topical formulations are excellent in the percutaneous absorption of diclofenac or its salts and provide good properties upon use and superior medical effects of diclofenac or its salts.