From the Manufacturer's Label
Nustevia products use only the highest grade of Stevia extract available, selected for purity, sweetness, and superior flavor. Plant based natural flavors are added to make our NuStevia products one of the best tasting around. NuStevia is an natural herbal sweetener. Our packets are very easy to take with you to work, when you go out to eat, and to other places where you might want to use NuStevia.