Transdermal drug delivery system: A review

Abstract

Transdermal drug delivery system is the system in which the delivery of the active ingredients of the drug occurs through the skin. Transdermal drug delivery can improve the therapeutic efficacy and safety of drugs because drug delivered through the skin at a predetermined and controlled rate. Skin is the important site of drug application for both local and systemic effect. The permeation of transdermal patches were crosses the skin through matrix and reservoir systems. Various techniques are available to prepare the transdermal patches such as solvent evaporation, solvent casting techniques. It provides more bioavailability when compared with the other route of administration respectively.