Last update: 2.5.2017.

Considered it to be as effective as D3

Supplement Watch - Vitamin D2

Other name(s) for Vitamin D2


General information for Vitamin D2

Vitamin D2 is a fungus/yeast-derived product made by radiating a compound from the mold ergot. Vitamin D2 is accepted as a good alternative but D3 is considered better for several reasons.

Solubility of Vitamin D2


Take care when supplementing with fat soluble vitamins.

Benefits of Vitamin D2

Benefits for D2 are mainly the same as for D3 but the D3 version is condidered to be the better of these.

Deficiency symptoms / disease


Overdose symptoms / disease

The threshold for vitamin D toxicity has not been established. There is defined a tolerable upper intake level however. Vitamin D overdose is rare and it is usuallyt caused by supplementing with high doses of vitamin D rather than sunlight exposure.

FDA information for Vitamin D2

(Daily value/Recommended dietary allowance/Adequate intake)

Recommended intakes of nutrients vary by age and gender and are known as Recommended Dietary Allowances (RDAs) and Adequate Intakes (AIs). However, one value for each nutrient, known as the Daily Value (DV), is selected for the labels of dietary supplements and foods. A DV is often, but not always, similar to one's RDA or AI for that nutrient. DVs were developed by the U.S. Food and Drug Administration (FDA) to help consumers determine the level of various nutrients in a standard serving of food in relation to their approximate requirement for it. The label actually provides the %DV so that you can see how much (what percentage) a serving of the product contributes to reaching the DV.

Data from U.S. Department of Health & Human Services, National Institutes of Health, Daily values.

Look at daily value in the main vitamin page

Food sources for Vitamin D2

Look at food sources in the main vitamin page

External links

Wikipedia-Ergocalciferol MedlinePlus-Vitamin D