Silk All Natural?? Soymilk Vanilla. 50% More Calcium Than Dairy Milk???. Lactose & Dairy - Free. 6g Heart Healthy Soy Protein???. *With added Vitamins. ???As part of a diet low in saturated fat and cholesterol, 25 grams of soy protein per day may reduce the risk of heart disease. A serving of Silk?? Vanilla provides 6.25 grams of soy protein. 100 Calories Per Cup. One Quart (946 ml).