The main focus of this research work was to develop a matrix type transdermal patch containing Propranolol hydrochloride and combination of two hydrophobic Polymers Eudragit L-100 and Eudragit S-100 by Solvent Evaporation technique.Combination of two Plasticizers Glycerine and Dibutyl phthalate were used and their effect on drug release was studied by changing their concentration in each batch.Methanol and Dichloromethane solvent system was used in which methanol acts as a penetration enhancer.Since oral bioavaibility of Propranolol Hydrochloride is poor due to high first pass metabolism...