Ethnopharmacology is a multidisciplinary subject and an area of research where tradition and modern science coexists. The progress of this interdisciplinary science is expanding fast with our increasing quest for phytopharmaceuticals and our increasing awareness on traditional and alternative systems of medicines. The book is a compilation of articles written by eminent researchers working on phytomedicine and on various aspects of ethnopharmacology. Many of the articles are modern approaches to ethnopharmacological research. The book will be immensely useful to students, teachers, scientists and pharmaceutical industries interested in plant based medicine and drug development.