This book provides the basic as well as advanced concepts involved in the design of controlled and targeting drug delivery systems followed by highlighting those systems which enable site-specific delivery to the eye, nasal cavity, lungs, buccal and intrauterine cavity and even implants. The various strategies that are currently in use/ study have been discussed in a simple and scientific manner. In addition, the book also details the various nanotechnology and microencapsulation related dosage forms such as liposomes, neosomes, nanoparticles, monoclonal antibodies and microspheres that have attached the attention of the scientists. Illustrative figures for the drug delivery systems and their mechanisms have been shown wherever necessary for better understanding of the content. The authors have put in their best efforts to make this book clear, concise and comprehensible to fulfill the demands of B.Pharm. PCI Syllabus