Is Kellogg's Corn Flakes Vegan?
Not Vegan
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
Not Vegan
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.
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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Other cereal
Frequently asked
Is 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.
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 June 20, 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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