The aim of this work is to develop topical hydrogels containing diclofenac potassium (DP) at 1 % w/v concentration using conventional hydrophilic hydroxypropyl methyl cellulose (HPMC, 50cPs) and different grades of modified hydrophobic hydroxypropyl methyl cellulose (HPMC, 60L, 60M, 90L and 90 M grade). Small quantity of hydrophobic HPMC is good enough to prepare gel of satisfactory quality. Hydrophobic formulations of higher viscosity with small quantity of polymer show higher release compared to hydrophilic formulations of lower viscosity with higher polymer concentration. Kinetic analysis...
The aim of this work is to develop topical hydrogels containing diclofenac potassium (DP) at 1 % w/v concentration using conventional hydrophilic hydr...
