Support bone health with Life Extension Bone Restore Calcium Supplement with Vitamin K2. This 2-pack delivers multiple forms of easy-to-absorb calcium such as calcium carbonate, plus vitamin D3, and includes vitamin K2 for enhanced calcium utilization. The formula also provides magnesium, zinc, manganese, silicon and a boron blend to support strong bones. Sourced ingredients are non-GMO and gluten-free, manufactured in the USA, with a Certificate of Analysis available.