Calcium, magnesium and vitamins D3 and K2 are vital for the formation of strong bones and teeth but more importantly they are essential for a healthy, strong immune defense. That’s the idea behind Cal/Mag/Vitamin D3 with Vitamin K2 from NaturesPlus—the best calcium/magnesium supplement available.*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.