E324
Ethoxyquin
What the research shows
PrototypeNot enough
published research on this page yet
1 health finding on this page so far · See the findings
A preservative used in some pet foods and spices.
It slows fats going rancid and stops spices losing colour.
Written from English Wikipedia1
- Vegan
- Vegetarian
What research says
Animal and lab studies only
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Concern
Liver and kidney health3
In animal studies, ethoxyquin dimer changed liver enzymes and showed signs of liver and kidney effects.
How it’s made and used
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Farmed salmon residues2
Ethoxyquin and its main breakdown product can still remain in farmed salmon after the required cleaning period.
The signal at the top counts the findings in people and in animal and lab studies. A concern in studies of people outranks animal and lab studies, and “No concerns” needs at least two findings in people. Findings whose study type is not stated are shown but not counted. This page is a reference, not medical advice. It describes what regulators and published research say. Talk to a doctor or dietitian about your own diet.
Regulatory status
Checked Sep 2026-
United States Permitted FDA 21 CFR 172.140
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Canada Permitted Health Canada · Other Accepted Uses
Status reflects the named register on the date checked. It is not a safety rating. A country appears here once we've found this ingredient on its official list.
How we checkProducts
The 6 most-scanned of 88 products on Open Food Facts that list ethoxyquin.
- CHICKEN & CHEESE TAQUITOS CASA MAMITA 11 additives
- Paprika fumé Mccormick 1 additive
- TACO SEASONING MIX HOT & SPICY OLD EL PASO · 1 oz 2 additives
- PAPRIKA compliments · 145 g 1 additive
- Paprika Club house 1 additive
- Taco Seasoning Mix Wick Fowler's 1 additive
References
- 1Ethoxyquin. Wikipedia. Accessed September 26, 2026.
- 2Bohne VJ, Lundebye AK, Hamre K. Accumulation and depuration of the synthetic antioxidant ethoxyquin in the muscle of Atlantic salmon (Salmo salar L.). Food Chem Toxicol. 2008;46(5):1834-43. doi:10.1016/j.fct.2008.01.028
- 3Ørnsrud R, Arukwe A, Bohne V, Pavlikova N, Lundebye AK. Investigations on the metabolism and potentially adverse effects of ethoxyquin dimer, a major metabolite of the synthetic antioxidant ethoxyquin in salmon muscle. J Food Prot. 2011;74(9):1574-80. doi:10.4315/0362-028X.JFP-10-547