Ultra K2 15 mg 90 caps by Klaire LabsExciting new research reveals the many roles of vitamin K, especially vitamin K2, or menatetrenone. K2 is important for bone health. It helps your body to metabolize calcium and contributes to healthy bone density. It also supports cardiovascular health and overall brain health. These statements have not been evaluated by the Food and Drug Administration (FDA). These products are not meant to diagnose, treat or cure any disease or medical condition.