Book excerpt: Medicinal plants are a source of potential therapeutic compounds. Phytotherapy can give patients long term benefits with less or no side effects. This is the third volume of the series which features monographs on selected natural products used to treat diabetes and hypertension. This volume brings 7 chapters contributed by 22 researchers, that cover updates on the biochemistry of diabetes, information on anti-diabetic and antihypertensive properties of oil bearing plants, herbs, fruits and vegetables, medicinal plants from Asia, as well as the medicinal value of specific plants such as, star apple (Chrysophyllum cainito). In terms of therapeutic agents, two reviews in this volume focus on terpenoids and glucagon-like peptide – 1 are also included. Each review covers different plant species or medicinal agents where applicable, providing readers essential information about their role in the treatment of diabetes and hypertension. Both academic and professional pharmacologists as well as clinicians will find comprehensive information on a variety of therapeutic agents in this volume.