Traditional medicines, especially the folk herbal medicines have recently been receiving heightened interest the world over. This reference book contains 24 papers by eminent scientists on herbal drugs, drug discovery and other related topics which deal with biological activities and aspects of herbal drug research, such as anti-cancer, antidiabetic, anti-ischemic, anti-microbial, ethnomedicine, ethnopharmacology, pharmacognostic and phytochemistry.