Abstract Transdermal drug delivery is having variety of benefits over traditional drug delivery systems and has increased patient compliance. Transdermal patches are easy application on skin and removal as and when required. TDDS deliver drugs for systemic effects at a predetermined and controlled rate over an extended period of time in order to enhance the therapeutic effectiveness and reduce adverse effect of the drug. TDDS helps in maintaining the concentration of drug within the therapeutic window range for extended time period ensuring that drug levels should not fall below the minimum effective concentration and it should not exceed the maximum effective concentration. The article highlights an overview of TDDS, its advantage over conventional dosage forms as well its limitations.
Keywords Transdermal drug delivery, TDDS, Transdermal/Skin patches, Polymers.