Frog Fuel Power, Ultra, and ProT GOLD Liquid Protein use Sucralose because we distribute those products all over the world and many zero-calorie sweeteners are not approved for use in medical foods.
ProT GOLD Powder uses Stevia. Many versions of Stevia on the marketplace are not as natural as they claim because they use chemical extraction methods. We use the natural Stevia plant which makes the product slightly bitter.