This new volume, Natural Polymers for Pharmaceutical Applications, Volume 1: Plant-Derived Polymers, presents some of the latest research on the applications of natural polymers in drug delivery and therapeutics for healthcare benefits. Polymers and their applications from several plants are discussed in depth, including tamarind gum, gum Arabic, natural carbohydrate polymer gum tragacanth, pectin, guar gum and its derivatives, locust bean gum, sterculia gum, okra gum, and others. The use of the polymers derived from plants as potential pharmaceutical excipients is expanding day by day because of their stability in the biological system, drug-releasing capability, drug-targeting abilities, as well as their bioavailability.