Are Kellogg's Corn Flakes Vegan?
It Depends
Not certifiedKellogg's Corn Flakes are not vegan. The base cereal (milled corn, sugar, malt, salt) is plant-based, but the vitamin D3 used in fortification is derived from lanolin, a grease extracted from sheep's wool. This applies to both the US and UK formulations. Kellogg's has not switched to a plant-derived D3 source for standard Corn Flakes as of 2025-2026.
The catch: Vitamin D3 in the fortification blend comes from lanolin, which is extracted from sheep's wool. It is listed plainly on the US label and confirmed by Kellogg's for the UK formulation as well.
Category
Cereal
Verdict
It Depends
Brand
Kellogg's
The US SmartLabel listing (product 038000991400) explicitly names vitamin D3 in the fortification blend. The UK packaging lists "vitamin D" without specifying D3, but Kellogg's confirmed to multiple consumer inquiries that their cereals use lanolin-sourced D3.
Lanolin is a byproduct of the wool industry: it is secreted by sheep skin and collected when raw fleece is processed. Strict vegans avoid it because it requires using animals.
Kellogg's launched a separate cereal brand in 2024 (Eat Your Mouth Off) with plant-based D2 specifically to address this gap, but that change has not carried over to the standard Corn Flakes line. Some sources also flag refined sugar as potentially filtered through bone char; while that is a real concern in US sugar supply chains, it is harder to verify per batch and is a secondary issue here.
The D3 is the concrete, label-confirmed disqualifier. The Honey Flavor variety adds honey, which is an additional non-vegan ingredient.
Related ingredient guides: Is sugar vegan? · Is honey vegan? · Is vitamin D3 vegan?
What makes it non-vegan
- ✕Vitamin D3 (lanolin-derived, from sheep's wool)
Vegan alternatives
- ✓ Nature's Path Corn Flakes (vegan-certified, uses D2)
- ✓ Whole Earth Corn Flakes (UK, vegan-labeled)
- ✓ Bob's Red Mill Corn Grits (unfrotified, fully vegan)
- ✓ One Degree Organic Sprouted Corn Flakes (vegan, no D3 added)
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Looking to make your own? Browse our vegan swaps.
Other cereal
Frequently asked
Are Kellogg's Corn Flakes Vegan?
Kellogg's Corn Flakes are not vegan. The base cereal (milled corn, sugar, malt, salt) is plant-based, but the vitamin D3 used in fortification is derived from lanolin, a grease extracted from sheep's wool. This applies to both the US and UK formulations. Kellogg's has not switched to a plant-derived D3 source for standard Corn Flakes as of 2025-2026.
Are Kellogg's Corn Flakes vegan?
It depends on how strict you are. The ingredients are milled corn, sugar, malt flavor and salt, with no meat, dairy or egg. The catch is the added vitamin D3, which is commonly sourced from lanolin (sheep wool grease), and the refined sugar, which may be filtered through bone char. Many casual vegans eat them; strict vegans often avoid them for the D3.
Do Corn Flakes contain dairy?
No. Kellogg's Corn Flakes list no milk ingredient and carry no milk allergen declaration, so they are dairy-free. You would add your own plant milk.
Is the vitamin D3 in Corn Flakes vegan?
Usually not. Vitamin D3 (cholecalciferol) in fortified cereals is most often derived from lanolin, an animal product from sheep wool. Kellogg's does not disclose the source, so strict vegans treat it as animal-derived unless a product specifically says plant-based (lichen) D3.
Are Corn Flakes gluten-free?
No. The malt flavor is made from barley, which contains gluten, so standard Corn Flakes are not gluten-free or celiac-safe.
Are Corn Flakes vegetarian?
Yes. There are no meat or gelatin ingredients. The only non-vegan concern is the vitamin D3 source and the sugar, both of which are acceptable to most vegetarians.
What is the catch with Kellogg's Corn Flakes?
Vitamin D3 in the fortification blend comes from lanolin, which is extracted from sheep's wool. It is listed plainly on the US label and confirmed by Kellogg's for the UK formulation as well.
What can I use instead of Kellogg's Corn Flakes?
Vegan options include Nature's Path Corn Flakes (vegan-certified, uses D2), Whole Earth Corn Flakes (UK, vegan-labeled), Bob's Red Mill Corn Grits (unfrotified, fully vegan), One Degree Organic Sprouted Corn Flakes (vegan, no D3 added).
Is Kellogg's Corn Flakes certified vegan?
Kellogg's Corn Flakes does not carry a third-party vegan certification, so the verdict here is based on its current ingredient list and manufacturer information.
Sources
Last verified July 12, 2026. See how we verify. Always confirm on the current product label, since recipes change. Product photo via Open Food Facts.
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