Simply Natural is a pure, unsweetened version of SPIRU-TEIN®, the world's greatest energizing protein shake. With only 5 g of carbs and 80 calories per serving, SPIRU-TEIN Simply Natural is a creamy and delicious treat for both low-carb and low-calorie diets. SPIRU-TEIN® Energy Shakes feature our Tri-Part Protein Blend of non-GMO rice protein, pea protein, and both non-fermented and fermented soy. With 14 grams of protein, each serving of SPIRU-TEIN® is a high-protein energy meal. Each delicious flavor has been meticulously engineered to provide a broad range of minerals and an incredible 100% of the Daily Value of all vitamins.