Vitamin B2
This is what the ingredient is.
Vitamin B2 (Riboflavin) is an essential water-soluble vitamin that serves as a precursor to coenzymes involved in energy metabolism.
Here is why it shows up on the label.
Used for fortification and as a yellow food coloring. Found in enriched grains, cereals, and dairy products.
Here is what food agencies say.
FDA mandates in enriched grain products. European food agencies allow it. as both nutrient and color (E101). Globally permitted.
Here is what research has found.
Essential nutrient with no established upper limit. Deficiency rare in developed countries. Bright yellow color.
Here are a few things worth knowing.
Very safe. Excess excreted in urine, causing bright yellow color. No toxicity concerns at any intake level.
Sources
- FDA CFR 21
- EFSA Scientific Opinion
- Institute of Medicine DRIs
How to read this page
We publish plain facts about this ingredient so a label is easier to read. This is not medical advice, and it is not a recommendation to buy, avoid, or use anything. For a personal health question, talk with a clinician who knows your history.