Nanotechnology refers to the branch of engineering and science, focused on the design, production, and usage of systems, devices and structures through the manipulation of molecules and atoms at the nano scale. It facilitates the production of better products and it has applications in medicine for combating various diseases. The capability to manipulate systems at the atomic level enables the production of nanomaterials. They can be used as probes, sensors, or vehicles for the transportation of biomolecules in biological systems. Implementation of nanotechnology in medicine involves designing mechanisms and technologies so that nanoparticles and nanodevices can interact with the body at sub-cellular or molecular level with extreme precision. Nanotechnology can be used within the field of pharmaceuticals for site specific and target oriented delivery of medicines. It can help in reducing the drug consumption and side effects by specifically targeting the morbid region. This book explores all the important aspects of nanotechnology and its significance in drug delivery and pharmaceuticals in the present day scenario. It elucidates new techniques and their applications in a multidisciplinary manner. This book will help the readers in keeping pace with the rapid changes in this field.