Features a 1:2 ratio of calcium to magnesium, great for complementing the average American diet that is low in magnesium-rich foods such as whole grains and beans. Because magnesium is essential for muscular relaxation, and this product includes twice as much magnesium as calcium, its also a perfect choice for people with muscle cramping and post-workout soreness*, featuring 500 mg of calcium and 1,000 mg of magnesium per three tablets with co-nutrients, foods and over 1,000 mg of herbs.