Calcium Supplement. Gluten free. Bone health advanced (Includes magnesium, manganese, copper and zinc). 2 in 1 dual action. Bone strength & flexibility. Includes magnesium & zinc. Know your bones. Fact: Calcium and Vitamin D are not the only nutrients that support strong bones. Magnesium, zinc, copper, and manganese are also important bone fortifying nutrients that support healthy bones. Caltrate Plus Minerals is a dual benefit formula for bone strength & flexibility. Fact: 94% if Americans are not getting enough Vitamin D from food alone. Caltrate has the highest level of Vitamin D3 (Per tablet; among leading calcium supplement brands) to help maximize calcium absorption, supporting healthy bones and muscles. Doctor recommended. Dual Benefits: Support bone flexibility. Maintain strong bones. 2 in 1 dual action! 1. Calcium, Vitamin D3, and magnesium for bone health. 2. Zinc and other minerals (Refers to copper and manganese) to support collagen production for bone flexibility. www.caltrate.com. Facebook: Join us on Facebook. Questions? Comments? Call 1-800-282-8805. For most recent product information, visit www.caltrate.com. (This statement has not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.)