Pakistan has a strong tradition of herbal remedies and like most developing countries, its rural population still depends mainly on the indigenous system of medicine for their health related matters. Medicinal plants are a valuable source of new herbal drugs. During the last few decades, there has been increasing interest in the study of medicinal plants and their traditional use in different parts of the world. Despite the availability of different approaches for the discovery of therapeutical natural products still remain as one of the best reservoir of new structural types.