Avoid
E324 — Ethoxyquin
Antioxidant
E324 (Ethoxyquin), a antioxidant, is rated "avoid": worth avoiding. An antioxidant originally developed as a pesticide and rubber stabiliser. The EU suspended its feed authorisation in 2017 because a genotoxic metabolite could not be ruled out. Yuka moved it from green straight to red in 01/2025.
Why it's rated “avoid”
An antioxidant originally developed as a pesticide and rubber stabiliser. The EU suspended its feed authorisation in 2017 because a genotoxic metabolite could not be ruled out. Yuka moved it from green straight to red in 01/2025.
Risk rating: Avoid
Known or suspected to cause harm: a substance EFSA or another regulator has flagged, or one restricted in some jurisdictions. Best kept out of a regular diet.
Frequently asked questions
Is E324 (Ethoxyquin) safe?
An antioxidant originally developed as a pesticide and rubber stabiliser. The EU suspended its feed authorisation in 2017 because a genotoxic metabolite could not be ruled out. Yuka moved it from green straight to red in 01/2025.
What are other names for E324?
E324 is also known as ethoxyquine, ethoxyquin.