Tween-80

Naproxen is a non-steroidal anti-inflammatory drug (NSAID) commonly used for the reduction of mild to moderate pain, fever, inflammation and stiffness caused by conditions such as osteoarthritis, rheumatoid arthritis, psoriatic arthritis, gout, ankylosing spondylitis, injury, menstrual cramps, tenditis, bursitis and the treatment of primary dysmenorrheal. The reason behind incorporation of Naproxen in Niosomes as this non-ionic surfactants vesicles offer several advantages over other drug carriers like liposome with respect to its biocompatibility, simple and controllable preparation, their capacity to carry large amount of drug, commercially availability, capable of entrapping hydrophilic and hydrophobic drug, cheaper in cost, any special condition not require for the use of the surfactant. The niosome system which achieves the site specific delivery of drug with controlled release kinetics of drug in predictable manner. Before this preparation, prior preparations had been made known as Pro-niosomes with Cholesterol, Surfactant, and Ethanol which later on converting to Niosomes.