Ingredients & DescriptionContains calcium and magnesium in a 2 to 1 ratio, a ratio recommended by many health care practitioners. The chelated form is tolerated better by those with allergies to citric products. Betaine hydrochloride is a digestive aid that increases stomach acidity and helps mineral absorption. Calcium is required for strong bones, teeth and cardiac function. Calcium not only builds strong bones and teeth but maintains bone density and strength. As well as supporting the body to sustain stressfull lifestyles, magnesium works with calcium to provide help to these same body systems and participates in more than 50 different biochemical reactions. That's why magnesium is so important to bone formation, nerve and muscle transmission, and energy production. The chelated form is better tolerated by those with allergies to citric products for the calcium and magnesium.* Vitamin D is included because it acts as a hormone that allows the body to absorb and properly use calcium.