Est. delivery Tue, Nov 25Estimated delivery Tue, Nov 25
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Supports Calcium Metabolism and Bone Health Gluten Free Dietary Supplement Bone & Joint Jarrow Formulas® Vitamin D₃ (cholecalciferol) may help improve vitamin D status better than equivalent amounts of ergocalciferol (D₂). D₃ is also the form produced by skin with UVB exposure (sunlight). Vitamin D₃ is converted to its hormonally-active form, calcitriol, in the body as needed. Calcitriol enhances dietary calcium and phosphorous absorption, supports the production of osteocalcin (an important structural protein in bone), and supports a healthy immune response.