This stevia is NOT an artificial or chemical sweetener. THM's pure extract is made from Rebaudioside A, a glycoside from the leaves of the herb stevia. A gentle water extraction process is used in this stevia; it has the highest potency of Rebiana A (the sweetest part) of 99% and extremely minimal processing, as well as none of that bitter taste that some stevia extracts are known for. Stevia is zero calorie and zero glycemic.
I was very leary about buying this stevia. I had heard it was the best out there but had tried so many others that I didn't like. The THM stevia is amazing! No bitter aftertaste at all. I will not buy any other stevia again!