Dual benefits: bone strength & flexibility* To stimulate collagen production*^ Doctor recommended This supplement has calcium plus collagen-supporting minerals to help your bones stay strong and flexible.* Additionally, this supplement has the most vitamin D3** to help maximize calcium absorption to support strong, healthy bones.* #1 calcium supplement in the world.*** **Per tablet; among leading calcium brands. ***Caltrate is the #1 selling brand of calcium supplements. ^Refers to copper, manganese and zinc. 1-800-282-8805 *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.