Plants with beautiful flowers that turned out to contain many properties as a drug. This "sophisticated" plant has a substance called Rosendin is an anthocyanidin pigment (anthocyanidin) found in its flower.
There is also a substance called Vincristine, which is a chemotherapy drug used to treat certain types of cancer, is also found in this plant. Flowers and leaves have the potential to be a source of medicine for leukemia and Hodgkin's disease.
In the roots, stems, leaves and seeds of tapak dara have anti-cancer alkaloid content. Alkaloid content include vinblastine (VLB), vincristien (VCR), leurosine (LR), vin cadioline, leurodisibe, catharanthine, reserpine, ajmalicine and serpentine.
While alkaloids that can lower levels of sugar are leurosine, catharantine, lochnerine, tetra-hydroalstonine vindoline, vindolinine, norharman, lochnerine, akuammine, vincamine, vinleurosin, and vinrosidin. Various alkaloids are toxic.
Signs of poison poisoning are fever, limp, and vomiting within 24 hours. Other signs are neuropathy, loss of tendon reflex, hallucinations, coma, and death.