AJCN: The case against ergocalciferol (vitamin D2) as a vitamin supplement. &qu…

AJCN: The case against ergocalciferol (vitamin D2) as a vitamin supplement. "The case that vitamin D2 should no longer be considered equivalent to vitamin D3 is based on differences in their efficacy at raising serum 25-hydroxyvitamin D, diminished binding of vitamin D2 metabolites to vitamin D binding protein in plasma, and a nonphysiologic metabolism and shorter shelf life of vitamin D2. Vitamin D2, or ergocalciferol, should not be regarded as a nutrient suitable for supplementation…"

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