Transdermal Drug Delivery System: An Update of Upcoming Evolution

In recent years considerable attention has been focused on the development of controlled release drug delivery systems. Controlled release drug delivery systems are designed to release one or more drugs continuously in a predetermined pattern for a fixed period of time either systemically or to a specified target organ. Drug release from this system should be at a desired predictable and reproducible rate. The primary objectives of controlled release drug delivery are to ensure safety and to improve efficacy of drugs as well as patient compliance. Controlled release drug delivery systems have been designed for oral parental, implantable and transdermal route. The benefits of intravenous infusion closely duplicated, without its hazards by using the skin as the port of drug administration to provide continuous transdermal drug infusion into the systemic circulation.