Costus igneus, commonly known as insulin plant in India. Consumption of the leaves are believed to lower blood glucose levels, and diabetics who consumed the leaves of this plant did report a fall in their blood glucose levels. Also known as a Costus igeus, hyperglycemia, insulin plant. Insulin Plant is a boon by Mother Nature for the treatment of Diabetes - A menacing health condition, if left untreated; it can take severe toll on various organs of the body such as kidneys, eyes, gastrointestinal tracts and the heart.