Last reviewed May 2026 · 1 min read
Is Vitamin D2 (Ergocalciferol) vegan?
Also known as: Ergocalciferol, Calciferol, Vitamin D
Vegan
Suitable for a vegan diet.
Yes — Vitamin D2 is produced by irradiating ergosterol, a sterol found in fungi (like yeast) and some plants.
01 · The basics
What is Vitamin D2 (Ergocalciferol)?
A form of vitamin D, also known as ergocalciferol, used to fortify foods like plant milks and cereals. It plays a crucial role in the body's absorption of calcium.
02 · The source
Where it comes from
Vitamin D2 is produced by irradiating ergosterol, a sterol found in fungi (like yeast) and some plants. This process does not involve any animal products, making it inherently vegan.
Frequently asked
FAQ
Is Vitamin D2 the same as Vitamin D3?
No, Vitamin D2 (ergocalciferol) is plant/fungi-derived, while Vitamin D3 (cholecalciferol) is typically derived from lanolin (sheep's wool) or lichen. While both function as vitamin D, D2 is always vegan, whereas D3 needs to be checked for a lichen source to be considered vegan.
Are all fortified cereals with Vitamin D vegan?
Not necessarily. Many cereals, such as Kellogg's Special K or General Mills' Cheerios, are fortified with Vitamin D3 from lanolin. Check the ingredient list specifically for "Vitamin D2" or "ergocalciferol" to ensure it's vegan.
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