In this present study it can be concluded that topical gel formulations containing drug Diclofenac sodium were prepared with different concentration of gelling agents (carbopol-940/934/ HPMC 3K), which have shown an acceptable results in various evaluation studies. Gel was characterized on basis of various evaluation paeameters, All prepared gel showed acceptable physical properties concerning color, odour, consistency, uniformity, homogeneity, pH value, viscosity and spreadability. An in vitro drug release study was carried out using an egg membrane by using instrument franz's diffusion cell...