About this item CLINICAL STRENGTH: Plant calcium from sustainably harvested Red Marine Algae COMPLETE PLANT CALCIUM: Expertly formulated with Vitamin D3 for better absorption, Vitamin K2 to direct calcium to bones (where you need it most), magnesium and 70 whole-food trace minerals BONE STRENGTH: Protects against bone loss and promotes bone density & joint flexibility* Slim, easy-to-swallow tablets with slow & steady release USDA Organic, Non-GMO Project Verified, 100% Vegetarian, Kosher, Certified Gluten Free by NSF, Sustainably Harvested