Ingredient

Blue 21

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Source
Unknown
Not yet classified by editors
Allergen
No
Role in food
Since Blue 21 is not an approved food additive in the United States, it …

What it is

Blue 21 is not a recognized food ingredient or color additive by the U.S. Food and Drug Administration (FDA). Therefore, there is no publicly available information regarding its specific composition, source, or manufacturing process for use in food.

Why it's used

Since Blue 21 is not an approved food additive in the United States, it is not used by manufacturers in foods sold in the US. Its intended function, such as coloring, sweetening, or preserving, and its typical food applications are unknown.

Health notes

Blue 21 is not approved by the FDA for use as a food additive in the United States. Without FDA approval, there is no regulatory status or safety evaluation for this substance as a food ingredient. Consequently, there is no information from bodies like JECFA or EFSA regarding its safety or potential health effects when consumed in food.

Allergen info

Information on potential allergens for Blue 21 is unavailable as it is not a recognized food ingredient.

Products containing Blue 21

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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.