This is a useful textbook and resource for undergraduateand postgraduate students and anyone in the working concepts of a drug delivery system and its performance. A novel drug delivery system refers to strategy, technology, formulation-based approaches and customized system(s) developed for safe administration and within body transportation of drugs as needed for optimum therapeutic benefits while ensuring minimum to nil toxic effects.Multidisciplinary approaches and cutting edge technology have been used to develop the carrier modules to deliver the contained drug to the target tissues in a preprogrammed manner. The process desirably modifies the drug distribution and accumulation,thereby producing optimum therapeutic effects. Carrier-mediated drug delivery has emerged as a powerful technology for the treatment of various difficult pathologies. The therapeutic index of conventional and novel drug is enhanced owing to specificity due to targeting of drug to the particular tissue.This book includes an introduction to novel drug delivery, oral osmotic pumps, bioadhesive and mucoadhesive systems, multiple emulsions, colon-specific drug delivery systems, transdermal drug delivery systems, spherical crystallization, microemulsion, implants and inserts, micellar systems, liposomes, microspheres and microcapsules, nanoparticles,resealed erythrocytes, transfersomes and ethosomes, organogels, dendrimers, niosomes, solid lipid nanoparticles, drug conjugates, cyclodextrin complexes, multifunctional nanomedicines, and floating drug delivery system(s). Each chapter attempts to discuss introduction, concept, progress, status and future prospects of the concerned novel drug delivery system.