Drug delivery is an area of research concerned with the development of novel materials or carrier systems for the effective therapeutic delivery of drugs. One of the emerging technologies for drug delivery is nanotechnology. It enables enhanced treatments with lesser side effects and targeted delivery of drugs. Nanotechnology involves the characterization, production, design and application of nanoscale materials in different key areas, which helps in providing site specific treatment, which in turn decreases the accumulation of drugs in the healthy tissues. Furthermore, it helps in retention of drugs in the body for efficient treatment and helps in transfer of drugs across the endothelial and epithelial barriers. This leads to fewer plasma fluctuations, thereby reducing the side effects. This book provides significant information on the application of nanotechnology for drug delivery. Scientists and students actively engaged in the study of drug delivery systems will find this book full of crucial and unexplored concepts.