Stevia "supplements" like this great Stevia Liquid Extract from NOW Foods really aren't used to supplement the diet with stevia per se -they're used to sweeten foods and drinks because stevia is an herb with a naturally sweet taste but no calories or metabolic effects like sugar. But because stevia (in this form) hasn't been approved as a sweetener by the FDA, brands can't really refer to stevia supplements as sweeteners. Which is a shame because stevia is a great alternative to sugary sweeteners, especially for people watching their weight, their blood sugar, or overall metabolic health. You too can use NOW Stevia Liquid Extract in your favorite beverages and foods, and as long as you're not selling it, feel free to call it a sweetener.