Is it vegan? Vitamins & supplements

Is vitamin D2 vegan?

Vegan

Quick answer: Yes. Vitamin D2 is made by exposing yeast or fungi to UV light and is vegan.

Also called: ergocalciferol, vitamin D2

Why it’s vegan

According to the NIH Office of Dietary Supplements, vitamin D2 is manufactured using UV irradiation of ergosterol in yeast. UV-treated mushrooms also contain vitamin D2.

D2 is widely used in vegan supplements and fortified plant milks. Supplement capsules may still be made from gelatin, so check the capsule material.

What to look for on the label

  • vitamin D2
  • ergocalciferol

Where it’s found

  • Vegan supplements
  • Fortified plant milks and cereals
  • UV-exposed mushrooms

Frequently asked questions

Is vitamin D2 vegan?

Yes. Vitamin D2 is made by exposing yeast or fungi to UV light and is vegan.

Sources

  1. Vitamin D: fact sheet for health professionals — NIH Office of Dietary Supplements
  2. Vitamin D — NHS

Checked on 31 October 2026. Ingredients and recipes change, and the same product can differ between countries — always check the current label. This page is general information, not allergy or medical advice.

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