The noni plant, native to Asia, Australia, and the islands of Polynesia, is a small, shrubby tree. It is used to treat variety of health problems such as Diabetes, Blood pressure, pains etc. People usually take noni by mouth for colic, convulsions, cough, diabetes, painful urination, stimulating menstrual flow, fever, liver disease, constipation, vaginal discharge during pregnancy, malarial fever, and nausea.