"Natural stevia" refers to a sweetener made from the leaves of the stevia plant. It means that the sweetener is derived from a natural source, without any artificial additives or chemicals. Full definition
Natural stevia sweeteners were found to have no effect on insulin or blood sugar levels. (grassfedgirl.com)
There are many good tasting protein shakes out there today that are sweetened with natural stevia leaf and come in many yummy flavors like chocolate, strawberry, banana, or vanilla. (energyfirst.com)
Made from an intensely sweet extract of natural stevia leaves, it has zero calories, zero carbohydrates and a zero glycemic index. (amazon.com)