Vitamin D3
Vitamin D3, or cholecalciferol, is one form of the fat-soluble vitamin D. Skin makes it in response to UV light, and it also comes from foods and supplements.
Also listed as Cholecalciferol, Vitamin D, D3, Vitamin D-3
What can food contribute?
The NIH table lists 16.2 µg vitamin D in 3 ounces of cooked farmed rainbow trout and 14.2 µg in the same portion of cooked sockeye salmon. UV-exposed mushrooms supply vitamin D mainly as D2 rather than D3. Food-table values refer to vitamin D content and should not all be interpreted as D3. 1
What does the German reference value assume?
DGE gives 20 µg daily for adults when the body makes no vitamin D itself. That equals 800 international units (IU). The condition matters: the value is not an automatic extra supplement dose on top of adequate sun-derived production and food intake. 2
Sources
- Vitamin D: Fact Sheet for Health Professionals NIH Office of Dietary Supplements
- Vitamin D: Referenzwerte Deutsche Gesellschaft für Ernährung