Medical Herbalism is a foundational textbook on the scientific principles of therapeutic herbalism and their application. It contains comprehensive information concerning the identification and use of medicinal plants both by chemical structure and physiological effect, the art and science of making herbal remedies, and the challenge to current research paradigms posed by complex plant medicine. Hoffmann details the intricate chemistry behind herbalism, providing important background and insights into how herbal remedies are able to achieve their results and the limitations and potential of viewing herbs chemically. He includes up-to-date information on preparations, dosage, and contraindications, information on toxicology and the issues involved in determining dosage and formulation type for an individual, and the pros and cons of both commercial and traditional techniques. His materia medica presents 150 of the most beneficial herbs used in treatment practices, identifying not only their present uses but also their historical derivations. With additional sections devoted to the principles of green medicine, the history of Western herbalism, the variety of other medical modalities using medicinal plants, and an extensive resource directory, Medical Herbalism is the comprehensive textbook all students and practitioners of clinical herbalism need to develop their healing practices.