Vitamin B2

Vitamin B2, also known as riboflavin, is a water-soluble B vitamin. The term ‘flavin’ originates from the Latin word ‘flavus’ referring to the yellow colour of this vitamin. Vitamin B2 is found in the human body primarily as an integral component of the coenzymes flavin adenine dinucleotide (FAD) and flavin mononucleotide (FMN) (1). Coenzymes derived from riboflavin are termed ‘flavocoenzymes’, and enzymes that use a flavocoenzyme are called ‘flavoproteins’ (2).

Vitamin B2 deficiency is rare, but may occur in combination with deficiencies of other water-soluble vitamins.

Authored by Dr Peter Engel in 2010, reviewed by Hasan Mohajeri on 01.09.2017

Download PDF

Learn more

Things to know about Vitamin B2

  • Other applications

    There is some evidence that impaired mitochondrial oxygen metabolism in the brain may play a role in the development of migraine headaches. Read More

  • Supply situation

    National nutrition surveys in European countries provide an indication of current intake of some B vitamins. Read More

  • Deficiency

    Symptoms of vitamin B2 (riboflavin) deficiency include sore throat, redness and swelling of the lining of the mouth and throat. Read More

  • Sources

    Foods high in vitamin B2 (riboflavin) include milk, eggs, salmon, beef, spinach, asparagus, and broccoli. Read More

  • Safety

    No toxic or adverse effects of high vitamin B2 (riboflavin) intake in humans are known. Read More