Stevia In The Raw is a zero-calorie sweetener that consists of extracts of the stevia plant and a bulking agent derived from corn, according to the company's website. Truvia is a sweetener made from sugar alcohols, an extract from the stevia plant and undisclosed natural flavors, explains The Truvia Company.
Both Stevia In The Raw and Truvia claim to be zero-calorie sweeteners derived from the stevia plant, but neither lists stevia extracts as its first ingredient. Stevia extract is sweeter than sugar, but does not raise blood insulin levels, according to Truvia's website. Neither sweetener is a pure extract from the plant. The stevia plant is not approved by the U.S. Food and Drug Administration as an ingredient, but the sweetening agent made from the plant has been legal since 2008, notes Truvia.
The first ingredient in Truvia is erythritol, a sugar alcohol made from fermented corn, according to 100 Days of Real Food. The second ingredient is the sweet molecule from the stevia plant, and the third is "natural flavor." Similarly, Stevia In The Raw lists dextrose as its first ingredient. The company's website says that dextrose or maltodextrin, a carbohydrate made from corn, are added to bulk up the stevia extract to make it suitable for pouring.
Unlike Truvia, Stevia In The Raw contains no sugar alcohols, notes intheraw.com. Sugar alcohols are associated with digestive problems, but most of the sugar alcohol in Truvia is absorbed and does not cause problems, states The Truvia Company.