Every four-capsule dose of Race Day Boost contains 1,000 mg of sodium phosphate, 300 mg of which is comprised of sodium. The standard loading dose protocol is four servings a day for four days, so you'll be adding 1,200 mg of sodium to your daily total. Over the course of four days that's an additional 4,800 mg of sodium being consumed. The majority of athletes already consume far more sodium than is necessary from their diets, so it's extremely important to lower your dietary sodium/salt intake, especially when doing a loading dose of Race Day Boost.