
Magnesium
Magnesium is required by the hydroxylase enzymes that convert vitamin D into its active forms.
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NOW Foods · USA
Supplements › Vitamins › Vitamin D › Cholecalciferol (D3) › Vitamin D3 5000 IU Softgels
Softgels · 1 softgel · Cholecalciferol · 0.125 mg elemental per serving
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Magnesium is required by the hydroxylase enzymes that convert vitamin D into its active forms.

K2 activates osteocalcin and MGP, helping direct calcium toward bones rather than soft tissues.
Nutrient pairings are based on clinical absorption data. Statements regarding dietary supplements have not been evaluated by the FDA or EFSA and are not intended to diagnose, treat, cure, or prevent any disease. Always consult your physician before starting any supplementation protocol.
What it is
Budget high-dose vitamin D repletion
Who it suits
Bone density, Immune modulation, Muscle function
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Gross compound
0.125 mg
Elemental active
0.125 mg
% Daily value
2500%
Bioavailability
High
Fat-soluble secosteroid converted in liver to 25(OH)D and in kidney to calcitriol, which binds the vitamin D receptor to regulate calcium absorption and immune gene expression.
Target benefits
GI tolerance & side effects
Renal & other contraindications
Upper tolerable intake: 100 mcg (4000 IU)/day adults (EFSA/IOM)
Same category, different carrier economics.

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