Ingredient · E101

Riboflabin

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Source
Unknown
Not yet classified by editors
Allergen
No
Role in food
Riboflavin is added to foods as a nutrient supplement, often to fortify products like …

What it is

Riboflavin is a B vitamin, also known as vitamin B2. It is found naturally in foods like eggs, milk, meat, and leafy green vegetables. It can also be produced industrially through chemical synthesis or fermentation processes.

Why it's used

Riboflavin is added to foods as a nutrient supplement, often to fortify products like cereals, breads, and pasta. It also acts as a yellow colorant in some foods. Its presence helps ensure consumers get adequate amounts of this essential vitamin.

Health notes

Riboflavin is generally recognized as safe (GRAS) by the FDA when used as a nutrient. It is essential for energy production and cellular function. International bodies like JECFA and EFSA have evaluated riboflavin. High doses can turn urine bright yellow, but this is harmless. No significant health controversies are associated with typical dietary intake.

Allergen info

Riboflavin is not a major allergen and is not derived from any of the nine FDA major allergens. It does not contain gluten.

Products containing Riboflabin

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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.