Although lots of books have been published about herbal therapy, a comprehensive overview of the adverse effects of botanical medicines is not available. Yet such an overview is badly needed, because of the enormous rise in the use of herbal remedies. The book series will provide approximately 150 monographs on herbal remedies and plant-derived drugs. Each monograph will provide introductory information on Botany, Chemistry, Pharmacology and Uses, followed by an Adverse Reaction Profile subdivided according to organ and function. The World Health Organization Regional Office for Europe (Copenhagen) has decided to support the book in the form of an acknowledgement that it has been preparedin cooperation with this Office.