Sugar-free and calorie-free aids in blood sugar maintenance and calorie restriction. helps prevent diabetes by maintaining body weight. composed of stevia The stevia leaf is used to make stevia, a natural sweetener. Native American tribes in South America have been using stevia leaves for a century to naturally sweeten their food and beverages. Why Use Tropicana Slim Stevia Sweetener with No Calories? Suitable for diabetics and diet plans, it has no calories and tastes and sweetens like sugar. It can also be used in place of sweeteners when cooking.