Drug delivery refers to the formulations, storage systems, methods, production processes and technologies used to transport a pharmaceutical compound to its target site for achieving intended therapeutic effect. It aims to change the specificity and pharmacokinetics of the drug by combining it with various drug carriers, excipients and medical devices. The synthesis and design of effective drug delivery systems (DDS) is critical for healthcare and medicine. Nanotechnology and materials innovation are utilized together for making improvements in drug delivery. Liposomes, hydrogels, micelles and thin films with distinct biological and mechanical properties are used as carriers in novel drug delivery systems. Poly glycol acid (PGA) and their copolymers, poly lactide-co-glycolide (PLGA) as well as poly lactic acid (PLA) are some of the materials most frequently utilized in DDS development due to their properties of biocompatibility, biodegradability and ease of processing. This book provides comprehensive insights into materials design and clinical perspectives in drug delivery. Its extensive content provides the readers with a thorough understanding of the subject.