Ingredient · E319

TBHQ Antioxidant

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Source
Not animal-derived
Allergen
No
Role in food
Manufacturers add TBHQ to foods to prevent fats and oils from going rancid, which …

What it is

TBHQ, or tert-Butylhydroquinone, is a synthetic antioxidant. It is typically made from hydroquinone and isobutylene.

Why it's used

Manufacturers add TBHQ to foods to prevent fats and oils from going rancid, which helps extend shelf life. It is commonly found in foods with high fat content, such as baked goods like cakes and cupcakes, snack foods like popcorn and peanuts, and some dessert toppings.

Health notes

TBHQ is approved by the FDA as a food additive. The Joint FAO/WHO Expert Committee on Food Additives (JECFA) has evaluated TBHQ and established specifications for its use. Some studies have raised questions about potential health effects at very high doses, but regulatory bodies consider it safe at the levels typically used in food.

Allergen info

TBHQ is a synthetic chemical and is not derived from any of the FDA's major allergens. It does not contain gluten.

Products containing TBHQ Antioxidant

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Last updated: September 28, 2026

Note: This site presents label data from USDA FoodData Central for general information. It is not medical advice. Check the package label; formulations change.