Loading... Please wait...Steviva Blend 500ct single serving packets - Low calorie, low carb Steviva Blend is a stevia and an all natural gluten free grain extract called erythritol. Erythritol is found in nature at low levels in grapes, melons and pears and can be found at higher levels in fermented products like wine and cheese. Steviva Blend used for cooking and baking is about twice as sweet as sugar.