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Flavin Mononucleotide

Also known as: E106

Low concern

Riboflavin-5'-phosphate (E101(ii)/E106) is a water-soluble form of vitamin B2 that also acts as a yellow colorant. EFSA confirmed safety; ADI is 'not specified' (i.e., no numerical ADI needed).

Found in

5 products

E-number

E106

What it is

Riboflavin-5'-phosphate / Flavin mononucleotide (FMN); the phosphorylated form of vitamin B2.

Yellow color and vitamin B2 fortification.

Why it's flagged

may color urine yellow at higher fortification doses

What regulators actually say

"Riboflavin (C17H20N4O6, CAS Reg. No. 83-88-5)... The ingredient is used in food at levels not to exceed current good manufacturing practice."

21 CFR 184.1695 - Riboflavin — ecfr.gov

Regulatory status

United States — FDA

Riboflavin and riboflavin-5'-phosphate are GRAS (21 CFR 184.1695).

European Union — EFSA

Authorized; group ADI 0.5 mg/kg bw/day (EFSA 2013) for riboflavins.

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