Definition · Drug / molecule
Vitamin D
Also: 25-OH-D · 25-hydroxyvitamin D · vitamin D3 · cholecalciferol
Fat-soluble hormone-vitamin. Measure as 25-hydroxyvitamin D; target 40-60 ng/mL for most adults. Pair supplementation with K2 if dosing >2000 IU/day. The supplement aisle's headline molecule, deserved.
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