About the product
- Supports: Calcium and Bone Metabolism Immune Function
- Jarrow Formulas Vitamin D3 provides cholecalciferol, which is more biologically active than ergocalciferol (D2).
- Vitamin D3 is ultimately converted to its hormonally-active form, calcitriol, in the kidney.
- Calcitriol enhances dietary calcium and phosphorous absorption, stimulates the synthesis of osteocalcin (an important structural protein in bone), and supports a healthy immune response.
- Supports Bone Metabolism, and Immune Function
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