Supports Healthy Bones Certified Kosher Doctor Formulated Maxi Cal is a calcium formula with magnesium and vitamin D3 in a vegetarian capsule to maintain strong bones and to support the proper functioning of the electrical impulses that control our muscles. Calcium, though often taken for granted, is needed not just for strong bones and teeth, but also for maintaining healthy hormone levels, neurotransmitters and optimum heart function. Vitamin D3 is essential to maintain healthy blood levels of calcium and is necessary for healthy bones and teeth. Magnesium is needed to maintain healthy bone and muscle. It plays a role in making new cells and forming the cellular energy the body needs to function. Maxi Cal has a fine balance of calcium citrate and calcium carbonate for those people who have a delicate and sensitive digestive system. For optimum bone health, try Maxi Cal today.