Contents Factors affecting percutaneous absorption Percutaneous absorption enhancer IIL. Design features of transdermal drug delivery system I. Percutaneous absorption model Advantages and disadvantages of TDDSs VI. Examples of transdermal drug deliver systems VIl. General clinical considerations in the use of TDDSsContents I. Factors affecting percutaneous absorption II. Percutaneous absorption enhancer III. Design features of transdermal drug delivery system IV. Percutaneous absorption model V. Advantages and disadvantages of TDDSs VI. Examples of transdermal drug deliver systems VII. General clinical considerations in the use of TDDSs