This course gives an overview of the principles of drug delivery and targeting, their current applications and potential development in the future. The discussion involves cutting-edge technologies used in the drug delivery system such as liposomes, nanoparticles and microspheres, including the achievements and shortcomings of current drug delivery systems. This course also discuss strategies used to optimise drug delivery to target sites such as controlled/sustained drug release and drug targeting. Various drug delivery systems such as transdermal, transmucosal (nasal, pulmonary) and brain (targeting to the blood-brain barrier) will also be discussed.