The use of plants for treating diseases is as old as the human species. Medicinal plants continue to play a central role in the healthcare system of large proportions of the world's population. The history reveals that medicinal plants have traditionally served as mans most important weapon against pathogens. People use traditional, natural remedies for curing different types of disease and even in the next millennium the herbal medical practice will forge as important remedy to treat various disorders. This is particularly true in developing countries, where herbal medicine has a long and...