This reference book discusses the role of synbiotics in a wide range of disease states, including cardiovascular, reproductive, metabolic, neurodegenerative, gastrointestinal, thrombotic, skin, and inflammatory disorders. It reviews the functions of probiotics in the diagnosis, prevention, or treatment of various disease states. The book further covers improving the targeting efficiency of synbiotics through advanced drug delivery systems such as nanoparticles, microparticles, liposomes, microemulsion, solid lipid nanoparticles, and nano lipid carriers. The chapter addresses the implications of oral and topical delivery of synbiotics in different diseases and presents the safety assessment of synbiotics and clinical trials associated with synbiotics containing drug delivery systems for the treatment of diseases. The book also explores the synergistic welfare of synbiotics nutraceuticals in various conditions such as chronic respiratory diseases, gut health, and neurological functions and examines the toxicological profile, and regulatory aspects of nutraceutical supplements. As such, this book is a valuable resource for academics, research and industry professionals working in Pharmaceutical Sciences, Food Biotechnology, Immunology, and Health Sciences.