Is Castoreum (in 'natural flavors') vegan?
Short answer
Castoreum (in 'natural flavors') is not vegan. Castoreum is a secretion from beaver glands, occasionally used in 'natural vanilla flavor'. Not vegan.
Key takeaways
- Verdict: Castoreum (in 'natural flavors') is not vegan.
- Commonly found in: Some 'natural vanilla' or 'natural raspberry' flavors, Perfumes (more common here), Historic ice cream and candy use.
- Vegan alternatives: Real vanilla bean or extract, Synthetic vanillin (vegan), Products labeled 'plant-derived natural flavors'.
- Scan any barcode with VeggieOS (100% free) for an instant vegan verdict.
What it is
An oily substance from the castor sacs of beavers near the anal glands.
Why not vegan
Animal-derived. Use is rare due to cost (~$70/lb) but legally allowed under 'natural flavors'.
What a “Not vegan” verdict means
A not-vegan verdict means the ingredient is animal-derived in essentially all commercial supply, so a product listing it should be treated as non-vegan unless the manufacturer explicitly states a plant-based source in writing.
Where you'll find it
- Some 'natural vanilla' or 'natural raspberry' flavors
- Perfumes (more common here)
- Historic ice cream and candy use
At a glance
| Verdict | ❌ Not vegan |
|---|---|
| Ingredient family | Additives and E-numbers |
| Typical products | Some 'natural vanilla' or 'natural raspberry' flavors, Perfumes (more common here), Historic ice cream and candy use |
| Best vegan swap | Real vanilla bean or extract |
| Settled by certification? | Not required |
How to read the label
Castoreum (in 'natural flavors') belongs to the additives and e-numbers family. These are the terms worth scanning for on any ingredient list in this category:
- E120
- E441
- E542
- E631
- E901
- E904
- E910
- E920
- E1105
- Mono- and diglycerides
- Cross-check the E-number rather than the trade name — the number is standardised, the name is not.
- Additives with both routes (E471, E422, E570) are usually plant-based in Europe but should be confirmed for imported products.
- Assume synthetic origin for colours other than E120 (cochineal) and E904 (shellac).
- Where the product carries a vegan trademark, the additive question is already answered.
Mistakes to avoid
| Where it catches people out | What to do |
|---|---|
| E471 mono- and diglycerides | Can be from palm, soy or tallow. Usually vegetable in the EU; email the manufacturer for imported snacks. |
| 'Natural flavouring' | A legal black box that may include dairy or meat-derived notes. Vegan-certified products are the workaround. |
| Shiny sweets and fruit | Glazing agents E901 (beeswax) and E904 (shellac) are insect-derived. |
Additives and E-numbers in context
Food additives are the hardest ingredient family for plant-based shoppers because a single E-number can legally describe a compound made from petroleum, plants, microbes or animals, and the label never says which.
Only a minority of additives are ever animal-derived, but that minority is widely used: emulsifiers, glazing agents, some acids and a few flavour enhancers. Where a plant and an animal route both exist, the plant route is usually cheaper, so the odds favour vegan — but odds are not certainty.
The practical approach is to memorise the short list of genuinely risky numbers rather than treating all E-numbers as suspect. Everything else is far more likely to be synthetic or plant-based.
Does certification help? Vegan trademarks are the only practical way to resolve additive ambiguity at scale, because certifiers audit supply chains that labels do not disclose.
Vegan alternatives
- Real vanilla bean or extract
- Synthetic vanillin (vegan)
- Products labeled 'plant-derived natural flavors'
FAQ
- How likely is castoreum in my food?
- Very low — FEMA reports under 300 lb used annually in U.S. food. Still, vegans avoid undisclosed 'natural flavors' when possible.
- Are most E-numbers vegan?
- Yes — the large majority are synthetic or plant-derived. Fewer than a dozen commonly used additives are animal-derived.
- Why won't labels state the source?
- Food law requires the additive's function and identity, not its raw material origin, unless it is a declarable allergen.
Sources
Last reviewed June 4, 2026