Stevia Reb-A 80% is all natural sweetener, white to light yellow powder, odorless or having a slight characteristic odor, approximately 380 times sweeter than sucrose. It contributes zero calories & zero carbohydrates to finished products. It is derived from Stevia leaves, powder in form,The stevia plant is part of the Asteraceae family, related to the daisy and ragweed. Several stevia species called "candyleaf" are native to New Mexico, Arizona and Texas.