Book excerpt: Advanced Nanoformulations: Theranostic Nanosystems, Volume Three examines the applications of nanotherapeutic systems and nanodiagnostics in relation to polymeric nanosystems. In the last decade, numerous biopolymers have been utilized to prepare polymeric nanosystems for therapeutic applications. These biopolymers include polylactic acid, polylactide-co-glycolide, polycaprolactone, acrylic polymers, cellulose and cellulose derivatives, alginates, chitosan, gellan gum, gelatin, albumin, chontroitin sulfate, hyaluronic acid, guar gum, gum Arabic, gum tragacanth, xanthan gum, and starches. Besides these biopolymers, grafted polymers are also being used as advanced polymeric materials to prepare many theranostic nanocarriers and nanoformulations. This book explores the array of polymeric nanosystems to understand therapeutic potentials. It will be useful to pharmaceutical scientists, including industrial pharmacists and analytical scientists, health care professionals, and regulatory scientists actively involved in the pharmaceutical product and process development of tailor-made polysaccharides in drug delivery applications. - Contains in-depth discussions of the advanced formulations using nanosystems including high-quality graphics, flowcharts, and graphs for enhanced understanding - Reviews the literature on advanced formulations while also suggesting new avenues - Includes contributions in all areas of advanced formulations, providing a thorough and interdisciplinary work