Dietary Supplement Bone Support Healthy Teeth Optimal Wellness Gluten-Free No Artificial Preservatives Potency & Quality Guaranteed An FDA Regulated FacilityCarlson - Providing the Highest Quality Nutritional Supplements Since 1965The calcium in Cal-600 helps maintain healthy bones and teeth and plays an important role in many blood and tissue processes. Each soft gel provides 600 mg of calcium from calcium carbonate, which contains one of the highest concentrations of elemental calcium available.