New Chapter Bone Strength 120 Tabs Calcium From Plants, Not Limestone The truth is, the calcium in most supplements comes from limestone _ rocks. Bone Strength Take Care is dramatically different. It's plant-based calcium, sourced from the pristine coast of Iceland. Complete Bone Strength Complex Because calcium alone isn't enough, Bone Strength Take Care also provides key nutrients like Vitamin D3, which helps in the absorption of calcium, and Vitamin K, which helps in the maintenance of bones. May Reduce Risk of Osteoporosis Calcium intake, when combined with sufficient Vitamin D, a healthy diet, and regular exercise, may reduce the risk of developing osteoporosis. Ingredients: Amount per 1 Tablet Lithothamnion corallioides (Red marine algae) (whole plant) [Calcium 256.66 mg; Magnesium 19.33 mg; Silicon 0.7 mg; Vanadium 4.3 mcg] 850 mg Vitamin K2 (Menaquinone 7) 15 mcg Vitamin K1* (Phytomenadione) 11.67 mcg Vitamin D3* (Cholecalciferol) [333.33 IU] 8.33 mcg *fermented Non-medicinal ingredients: Organic milled soy, organic Saccharomyces cerevisiae, organic maltodextrin, organic gum acacia, organic alfalfa powder, organic barley, maltodextrin, hypromellose, silica and sunflower oil. Contains: Soy, wheat and barley. Contains gluten at less than 20 ppm.