Premium Natural Sweetener Non-Bitter Zero Calories NuNaturals uses our premium grade Stevia extract from which the unpleasant aftertastes have been removed. NuNaturals Stevia products use only the highest grades of Stevia extracts that we select for purity, sweetness and superior flavor. NuNaturals uses plant-based natural flavors that help to make our NuStevia products the best-tasting ones available. NuStevia is a natural herbal sweetener.NuNaturals