Today, the world witnesses a global resurgence of interests in plant-based drugs and cosmetics. The revival of traditional health care systems, which is mainly plant-based, has several ramifications including the challenging tasks of meeting the health care needs of the ever increasing human population. Since the majority of raw material for preparing herbal medicine is exploited from the wild and also the traditional practices of medicinal plants harvesting does not remain sustainable due to commercial interests, the loss of medicinal plants is unprecedented. People across the world use medicinal plants in several health care practices, and the loss of this valuable resource has direct bearings on these traditional health care systems. This book deals with multidisciplinary approach and contains information on different aspects of medicinal plants, which can be used as guiding tools.