Organic Calcium - 1300mg of Calcium per Serving from sustainably harvested, Clinically Proven ESC Organic Eggshell Calcium, one of the most absorbable forms of Calcium available, as specialized proteins are found in organic eggshells Reduces the Risk of Osteopororsis - This Food-Based Calcium Supplement for bone health also includes 800 IU of Vitamin D plus Vitamin K, added for improved Calcium absorption. Studies have shown that Calcium and Vitamin D, along with physical activity, may reduce the risk of Osteoporosis later in life Third-Party Certified - We believe Third-Party Certifications offer the most credible means of verification, that's why this Bone Strength Supplement is proudly Certified USDA Organic, NSF Certified Non-GMO and Gluten Free, Certified Kosher Vegetarian Tablets - Our Stronger Bones Tablets are made using our patent-pending Clean Tablet Technology process, which uses 100% Organic Food Based Tablet Materials and is 100% Non-GMO, creating an easy to swallow tablet that dissolves in less than 14 minutes and is highly bioavailable Doctor Formulated by David Perlmutter, M.D., F.A.C.N., America's Brain-Health Expert, Board-Certified Neurologist, #1 New York Times Best-Selling Author, Fellow of the American College of Nutrition, and Expert in the Human Microbiome