Is Vitamin B12 (Cyanocobalamin) vegan?
Short answer
Vitamin B12 (Cyanocobalamin) is vegan. B12 in supplements is bacterial fermentation. Always vegan.
Key takeaways
- Verdict: Vitamin B12 (Cyanocobalamin) is vegan.
- Commonly found in: Multivitamins, Fortified plant milks, Nutritional yeast.
- Vegan alternatives: N/A — vegan by default in supplements.
- Also listed as: cobalamin, methylcobalamin.
- Scan any barcode with VeggieOS (100% free) for an instant vegan verdict.
Also known as: cobalamin, methylcobalamin
What it is
A vitamin produced by bacteria (Propionibacterium freudenreichii).
Why vegan
Industrial B12 is microbial, not animal-derived. Animals only contain B12 because they too eat it or harbor producing bacteria.
What a “Vegan” verdict means
A vegan verdict means the ingredient itself contains no animal-derived material and is not conventionally produced using animal inputs. It does not guarantee the finished product is vegan: the same label can carry dairy, egg or honey elsewhere in the list, and shared production lines can add 'may contain milk' warnings.
Where you'll find it
- Multivitamins
- Fortified plant milks
- Nutritional yeast
At a glance
| Verdict | ✅ Vegan |
|---|---|
| Ingredient family | Vitamins and supplements |
| Also listed as | cobalamin, methylcobalamin |
| Typical products | Multivitamins, Fortified plant milks, Nutritional yeast |
| Best vegan swap | N/A — vegan by default in supplements |
| Settled by certification? | Not required |
How to read the label
Vitamin B12 (Cyanocobalamin) belongs to the vitamins and supplements family. These are the terms worth scanning for on any ingredient list in this category:
- Cholecalciferol
- Vitamin D3
- Lanolin
- Gelatine capsule
- Fish oil
- Omega-3
- Shellac coating
- Stearic acid
- Prefer D2 (ergocalciferol) or D3 explicitly labelled 'from lichen'.
- Look for 'vegetarian capsule', 'HPMC' or 'pullulan' on the shell.
- Choose algal oil for EPA and DHA rather than fish or krill.
- Check tablet coatings — shellac and carnauba are both used, only carnauba is vegan.
Mistakes to avoid
| Where it catches people out | What to do |
|---|---|
| Fortified plant milk | The added D can still be lanolin D3. Brands that use lichen say so prominently. |
| Multivitamin gummies | Gelatine base plus beeswax polish is the standard formulation. |
| Magnesium stearate | Usually vegetable but can be tallow-derived; ask if it matters to you. |
Vitamins and supplements in context
Fortification quietly reintroduces animal ingredients into otherwise plant-based food. Vitamin D3 is conventionally made from lanolin in sheep's wool, omega-3 from fish oil, and some vitamin A and E preparations use animal-derived carriers.
Plant-based routes exist for nearly all of them: lichen-derived D3, algal DHA and EPA, and synthetic or vegetable-sourced tocopherols. They cost more, so the default in cheap fortified products is the animal route.
Capsule shells matter as much as the contents — most soft-gel and many hard capsules are gelatine, while vegan supplements use HPMC (hydroxypropyl methylcellulose) or pullulan.
Does certification help? Supplements are a category where vegan certification genuinely pays: it covers both the active ingredient source and the capsule shell, which the ingredient panel often obscures.
Vegan alternatives
- N/A — vegan by default in supplements
FAQ
- Do vegans need to supplement B12?
- Yes — it is the one nutrient that cannot reliably come from a plant diet without fortified foods or supplements.
- Is vitamin D3 always non-vegan?
- No. Lichen-derived D3 is chemically identical and fully plant-based; it is labelled explicitly because it costs more.
- Do vegans need B12 supplements?
- Yes. Reliable B12 comes from fortified foods or supplements, and cyanocobalamin is produced by bacterial fermentation, so it is vegan.
Sources
Last reviewed June 4, 2026