Nanotechnology, a multidisciplinary scientific undertaking, involves creation and utilization of materials, devices, or systems on the nanometer scale and is currently undergoing explosive development on many fronts. It is expected to spark innovation and play a critical role in various biomedical applications, especially in drug delivery, as is shown by the wealth of information presented in this book particular, advances in nanotechnology that enable drugs to preserve their efficacy while being delivered to precise therapeutic targets are creating a host of opportunities for drug developers. In addition, by combining nanotechnology-based target-specific drug therapy with methods for early diagnosis of pathologies, we are getting closer to creating the ultimate functional drug carrier.