Straight from the cusp of nature zevic erythritol is a naturally occurring sweetener found in fruits. Zero calorie and zero glycemic index. 1 Tsp of sugar is equal to 2 tsp of erythritol zevic stevia sweeteners are 100 percent natural and zero calorie. Stevia is a natural zero calorie plant that is sweeter than sugar rich in antioxidants and chlorogenic acid required for a healthy body. One drop is equivalent to 1 tsp of sugar sweetness.