This vitamin is essential for the homeostasis of calcium and phosphate, which are in turn needed for the normal mineralization of bone, muscle contraction, nerve conduction, and general cellular function in all cells of the body. Vitamin D3 contributes to the transformation of the protein Osteocalcin into its active form, essential for the incorporation of calcium into the bone matrix.
Furthermore, Vitamin D3 stimulates the synthesis of various calcium transport proteins. It has also anti-inflammatory and immunoregulatory properties and is crucial for the activation
of the immune system defenses.
Low vitamin D levels have been associated with osteoporosis, distal radius and hip fractures, increased susceptibility to infections, diseases and immune-related disorders.
• Vitamin D3 15 mcg (equal to 600 UI)
Suggested in case of deficiency or increased nutritional needs of this nutrient. Vitamin D contributes to normal blood calcium levels, to the maintenance of normal bones and normal teeth, and to the normal function of immune system.