An 8 oz bottle of regular Boost contains 240 calories, 4 g of fat, 5 mg of cholesterol and 10 g of protein. There are 41 g of total carbohydrate and 0 g of fiber. Regular Boost is low in sodium; 130 mg but moderately high in potassium; 400 mg. Based on a 2,000 calorie diet, each 8 oz bottle contains 30 percent calcium, 25 percent iron and 30 percent phosphorus.