Habitat: Native of West Indies; commonly grown in Indian gardens.
English: Madagascar Periwinkle.Ayurvedic: Sadaapushpaa, Sadam- pushpa, Nityakalyaani, Sadaaba- haar.Siddha: Nithiya kalyani, Sudukadu mallikai.Action: Cytotoxic.
Over one hundred monomeric and bisindole alkaloids have been isolated.The indole alkaloid, vincamine, is a vasodilator; the bisindole alkaloids vinblastine and vincristine proved to be highly effective as cancer chemothera- peutic agents.Vinblastine and vincristine are clinically used in a number of thrombo- cytopenic disorders, such as refractory idiopathic thrombocytopenic purpurea and haemolytic anaemia.Vinblastine in combination with other chemotherapeutic agents (cis- platin and bleomycin) is used for the treatment of metastatic testicular cancer; also against bladder cancer, breast cancer, non-small cell lung cancer and Hodgkin's lymphoma in combination with other drugs.Vincristine, in various combinations, is highly effective in acute leukemia in children and lymphocytic leukemia; and pediatric tumours. (The Treatise on Indian Medicinal Plants.)