Ingredient · E101

Vitamins B2

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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 to fortify them and improve …

What it is

Vitamin B2, also called Riboflavin, is a water-soluble vitamin that is essential for energy production, cell function, and metabolism. It occurs naturally in foods like eggs, meat, dairy products, and green vegetables. It can also be produced synthetically for use as a food additive.

Why it's used

Riboflavin is added to foods as a nutrient supplement to fortify them and improve their nutritional value. It is commonly found in enriched grain products like bread and cereals, as well as dairy products and infant formulas. It also acts as a yellow coloring agent in some foods.

Health notes

Riboflavin is recognized as safe and effective by the FDA when used as a nutrient supplement. The US National Academies have established a tolerable upper intake level for riboflavin. JECFA and EFSA have evaluated riboflavin and established acceptable daily intakes. Riboflavin is generally considered safe, and deficiency can lead to skin and eye problems, but excess is typically excreted in urine.

Allergen info

Riboflavin is not a major allergen. It does not contain gluten.

Products containing Vitamins B2

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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.