The use of nanotechnology in medicine and more specifically drug delivery is set to spread rapidly. Currently many substances are under investigation for drug delivery and more specifically for cancer therapy. Nanotechnology is the study, design, creation, synthesis, manipulation, and application of materials, devices, and systems at the nanometre scale. Recent years have witnessed unprecedented growth of research and applications in the area of nanoscience and nanotechnology. There is increasing optimism that nanotechnology, as applied to medicine, will bring significant advances in the diagnosis and treatment of disease. Anticipated applications in medicine include drug delivery, both in vitro and in vivo diagnostics, nutraceuticals and production of improved biocompatible materials. Engineered nanoparticles are an important tool to realise a number of these applications. This book presents reviews and original matter from renowned experts working in the interdisciplinary field of nanotechnology use in drug delivery. From their direct and current practice, the readers can realise a wide vision on the new and enduring potentialities of nanotechnology application of drug delivery. Nanotechnology is expected to have a revolutionary impact on medicine. Nanoparticles can play a major role in medicine and especially in diagnosis and therapy of cancer, cardiovascular diseases and infectious diseases. To further the application of nanoparticles in pharmacy, it is important that the systems are stable, capable of being functionalized, biocompatible and directed to specific target sites in the body after systemic administration. Nanotechnology is on its way to make a big impact in Pharmaceutical and Medical diagnostics sciences. A dynamic collaboration is observed within the Researchers, Government, Pharmaceutical - Biomedical companies and educational institutions all over the world in developing the nanotechnology applications in advanced medicine and patient care. It is expected that the forthcoming generations of nano products will have target specificity, may carry multiple drugs and could potentially release the payloads at varying time intervals. Pharmaceutical education in India is also taking significant steps in incorporating courses as well as offering specialization in nanotechnology and its applications in Pharmaceutical scenario.