About Vitamin B2

Vitamin B2, also known as riboflavin, is a water-soluble vitamin that plays a crucial role in energy production and cellular function. It is involved in the metabolism of fats, drugs, and steroids, and is essential for the maintenance of healthy skin, eyes, and nerve functions.

Official resources

Fact sheets from the NIH Office of Dietary Supplements related to this ingredient group.

Dietary Supplement Label Database

Ingredient group data in NutriNav is aligned with the NIH Dietary Supplement Label Database (DSLD).

DSLD group id
9711

At a glance

Approval status

supplement

Compare All Forms

8 forms

Compare supplement forms of Vitamin B2 by absorption quality and what your body actually gets from each:

High Moderate Low
Form Absorption Steps to absorb Notes Action
Vitamin B2
  • CAS: 83-88-5
β€” β€” β€” View β†’
Vitamin B2 (mixed)
  • CAS: 83-88-5
  • DSLD group id: 3414
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Vitamin B2 (riboflavin 5-phosphate)
  • CAS: 83-88-5
  • DSLD group id: 2382
β€” β€” β€” View β†’
Vitamin B2 (Riboflavin Phosphate)
  • CAS: 83-88-5
  • DSLD group id: 3672
β€” β€” β€” View β†’
Vitamin B2 (riboflavin selenite)
  • DSLD group id: 9713
β€” β€” β€” View β†’
Vitamin B2 (Riboflavin)
  • CAS: 83-88-5
  • DSLD group id: 2543
  • Label category: synthetic
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Vitamin B2 (unspecified)
  • CAS: 83-88-5
  • DSLD group id: 2666
β€” β€” β€” View β†’
Vitamin B2 (various)
  • CAS: 83-88-5
  • DSLD group id: 9714
β€” β€” β€” View β†’

Also appears on labels as

Additional names seen on supplement labels for forms of this ingredient (beyond the main aliases above).

b2 r-5-p, coenzymated vitamin b2, coenzyme riboflavin-5-phosphate, coenzyme riboflavin 5'-phosphate, coenzyme vitamin b2, cultured riboflavin, from 10 mg of riboflavin 5' phosphate, natural vitamin b2, organic riboflavin, poten-zyme vitamin b2, r-5-p, riboflavin, riboflavin-5 phosphate, riboflavin-5 phosphate sodium, riboflavin-5'-phosphate, riboflavin-5'-phosphate sodium, riboflavin-5'-phosphate sodium salt, riboflavin-5-phosphate, riboflavin-5-phosphate complex, riboflavin-5-phosphate sodium, riboflavin 5, riboflavin 5 phosphate, riboflavin 5 phosphate sodium, riboflavin 5 sodium phosphate, riboflavin 5'-phosphate, riboflavin 5'-phosphate sodium, riboflavin 5'phosphate, riboflavin 5' phosphate, riboflavin 5'phosphate sodium, riboflavin 5' phosphate sodium, riboflavin 5-phosphate, riboflavin 5-phosphate sodium, riboflavin 5’-phosphate sodium, riboflavina, riboflavin b2, riboflavin pwd, riboflavin s-phosphate, riboflavin sodium selenite, ribovlavin, sodium riboflavin 5' phosphate, spirulina-bound riboflavin, vit. b2, vitamin b-2, Vitamin B2 (mixed), Vitamin B2 (Riboflavin), Vitamin B2 (riboflavin 5-phosphate), Vitamin B2 (riboflavin selenite), Vitamin B2 (unspecified)

Type: Vitamins

Organic compounds essential for normal growth and nutrition. Required in small quantities in the diet because they cannot be synthesized by the body.

Absorption: Fat-soluble vitamins require dietary fat for absorption. Water-soluble vitamins are generally well-absorbed but excess amounts are excreted.

Interactions: Some vitamins can interfere with medications. Fat-soluble vitamins can accumulate in the body.

Potential Benefits

Benefits associated with Vitamin B2 forms:

And 2 more benefits...

Potential Side Effects

Side effects associated with Vitamin B2 forms:

What does the research say?

Riboflavin is essential for various biological functions, including energy production and cellular function. Studies indicate its importance in preventing riboflavin deficiency, which can lead to symptoms such as sore throat, redness and swelling of the lining of the mouth and throat, cracks or sores on the outsides of the lips (cheilosis) and at the corners of the mouth (angular stomatitis), and inflammation and redness of the tongue (glossitis).