This Edited Volume, Advanced Drug Delivery Systems - Innovations in Nanoparticles, Biopolymers, and Natural Extracts, is a collection of peer-reviewed research chapters that offer a comprehensive overview of recent developments in drug delivery systems. The book comprises single chapters authored by various researchers and edited by an expert in the field. All chapters are complete in themselves but united under a common research study topic. This publication aims to provide a thorough overview of the latest research efforts by international authors and open new possible research paths for further novel developments.