100% natural zero-calorie sweetener made of a unique combination.BioStevia is a 100% natural zero-calorie sweetener made of a unique combination of RepA from Stevia and Erythritol (wood sugar) which gives the least possible aftertaste. BioStevia is used as an alternative to sugar and artificial sweeteners to add natural sweetness to hot or cold beverages, to sprinkle on fruits and to use in recipes.