Although it is well known that ""good bacteria"" can help nourish the intestinal tract to promote optimal digestive function, less may be known about prebiotics and their function and purpose in the body. Prebiotics are non-digestible carbohydrates derived from plant nutrients that beneficially nourish the good bacteria already in the digestive tract. They are the fertilizer that keep them alive and healthy in the body, as well as improve the good-to-bad bacteria ratio.