Medicinal plant-based synthesis of nanoparticles from various extracts is easy, safe, and eco-friendly. Medicinal and herbal plants are the natural source of medicines, mainly due to the presence of secondary metabolites, and have been used as medicine since ancient times. Secondary Metabolites from Medicinal Plants: Nanoparticles Synthesis and their Applications provides an overview on medicinal plant-based secondary metabolites and their use in the synthesis of different types of nanoparticles. It explores trends in growth, characterization, properties, and applications of nanoparticles from secondary metabolites including terpenoids, alkaloids, flavonoids, and phenolic compounds. It also explains the opportunities and future challenges of secondary metabolites in nanoparticle synthesis. Nanotechnology is a burgeoning research field, and due to its widespread application in almost every branch of science and technology, it creates many new opportunities. As part of the Exploring Medicinal Plants series, this book will be of huge benefit to plant scientists and researchers as well as graduates, postgraduates, researchers, and consultants working in the field of nanoparticles.