Vitamin D3, K2 and A

- Provides a balance of key fat-soluble vitamins, A, D and K, essential for bone health
- Contains vitamin K2 (MK-7), the most bioactive and long-lasting formK2 (MK-7) helps increase spinal bone mineral density in postmenopausal women
- Provides effective vitamin D3 to maintain blood levels of 25-OH vitamin D23
- Optimal form of vitamin A, palmitate
- Suitable for vegetarians
Vitamins K2, D3, and A provide clinically relevant doses of the three fat-soluble vitamins essential for optimal bone health. Although necessary for cardiovascular health, blood sugar regulation, immune function, and inflammation control, vitamins A, D3, and K2 have additional bone-related physiological functions, such as modulation of gene expression in osteoblasts and carboxylation of osteocalcin, an enzyme necessary for bone formation. This is illustrated by a reduction in undercarboxylated osteocalcin and an increase in bone mineral density (BMD) in postmenopausal women when vitamin K2 is added to vitamin D3 supplementation.
Vitamin D3 has diverse and important functions in multiple body systems, and widespread deficiency amplifies these crucial roles. Supplementation is associated with a well-established reduction in osteoporotic fractures. Correcting a vitamin D3 deficiency is essential when supplementing with vitamin A, as vitamin A appears to support bone health if vitamin D3 levels are adequate. Vitamin K2 is now recognized as being necessary not only for clotting, but also for the carboxylation of enzymes essential for healthy bones and blood vessels. Indeed, a meta-analysis showed improved spinal BMD and reduced fractures in postmenopausal women with osteoporosis, while data from controlled trials show reduced age-related BMD decline in healthy postmenopausal women. The MK-7 form of vitamins K2, D3 and A has a longer half-life than any other form.