Vitamin D2

CAS 50-14-6

Vitamin D2, or ergocalciferol, is the plant and fungal form of vitamin D. It is the form used to fortify most plant-based drinks, because unlike D3 it involves no animal material.

Where it is and isn’t permitted

Status of Vitamin D2 by jurisdiction. Every jurisdiction this site covers is listed, including those where the substance does not appear.
JurisdictionStatusScope and limitsCitation
United StatesFood and Drug AdministrationPermitted, with conditions21 CFR 172.379retrieved 2026-09-07
Codex AlimentariusCodex Alimentarius Commission / JECFANot listedDoes not appear on this jurisdiction’s permitted list. That is not the same as being prohibited.

What it is made from

Produced by exposing ergosterol from yeast or fungi to ultraviolet light, which converts it in the same way sunlight converts a precursor in human skin.

  • Vegan
  • Vegetarian
CAS registry number
50-14-6

Every name it appears under

6 recorded names. A label may use any of them.

CAS registry number

  • 50-14-6

As it appears in regulation

  • Vitamin D2

Other names

  • ERGCAL
  • ergocalciferol
  • Vitamin D2

Systematic names

  • (3β,5Z,7E,22E)-9,10-secoergosta-5,7,10(19),22-tetraen-3-ol

Hazard reference values

No reference value for this substance in the sources we hold.

Evidence and how bodies read it

Studies, and the differing conclusions regulators drew from them, are curated by hand rather than machine-read, and none has been written for this substance yet.

Sources for this page

  • ecfr retrieved 2026-09-07

Full licence terms and publisher details on Sources. How this page is built and updated: Method.

Machine-readable:/api/v1/additives/vitamin-d2.json