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Ergocalciferol
Ergocalciferol
Low concern
Ergocalciferol is an approved nutrient added to foods to address vitamin D inadequacy. NIH lists 100 mcg/day (4,000 IU) as the Tolerable Upper Intake Level for adults.
Found in
3,532 products
What it is
Vitamin D2 — produced by ultraviolet irradiation of ergosterol from yeast or fungi.
Vitamin D fortificant.
Why it's flagged
- hypercalcemia at very high supplemental doses
What regulators actually say
"The Tolerable Upper Intake Level for vitamin D is 100 mcg (4,000 IU)/day for adults. Excessive intake can cause hypercalcemia."
Regulatory status
United States — FDA
GRAS as nutrient (21 CFR 184.1950)
European Union — EFSA
Authorized vitamin D source
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