This book compiles contributions of prominent experts and researchers in the multidisciplinary arena of novel drug delivery systems. It gives insights into the ongoing and recent potentialities of various drug delivery systems. Emergence of analytical approaches and capabilities to determine particle sizes in nanometer ranges has focused interest towards nanoparticles for more effective methods of drug delivery. The book assesses and reviews procedures involved in the drug carrier systems to prepare and apply, along with the methodologies necessary to design, develop and characterize them. Some of the important topics are oral delivery of insulin, novel mucoadhesive polymers for nasal drug delivery, amphiphilic cyclodextrins, synthesis, utilities and application of molecular modeling.