“…Some notable examples are ajmalicine, a hypertensive drug from Catharanthus roseus and Rauwolfia serpentine ; ajmaline, an antiarrhythmic drug from R. serpentine ; yohimbine, an adrenergic receptor blocker, extracted from bark of Pausinystalia johimbe and vincristine and vinblastine, anticancer drugs from C. roseus . Anthocephalus cadamba, a medicinal plant of the Rubiaceae family, widely distributed in Nepal, Bangladesh, India, Sri Lanka, Burma, China, Thaïland and eastward through Malaysia to New Guinea, is a rich source of monoterpene indole alkaloids . A. cadamba had been used from ancient times in traditional systems of medicine for the treatment of many ailments such as fever, anemia, uterine‐complaints, blood diseases, skin diseases, leprosy, wound healing, diabetes mellitus, diarrhea, cough, inflammation, haemoptysis, vomiting, malaria and debility .…”