Vitamin B2

Type: Compound
Vitamin: B2
Name: Riboflavin
RDA:1.5 mg
Importance- to Body:
Present in body as coenzymes FAD and FMN (flavin mononucleotide), both of which act as hydrogen acceptors in body; also is component of amino acid oxidases.
Distribution- in Body:
Named for its similarity to ribose sugar; has green-yellow fluorescence; quickly decomposed by UV, visible light, alkalis; body stores are carefully guarded; excess eliminated in urine.
Excess Effects:
None listed
Deficiency Effects:
Among the most common vitamin deficiencies.
Dermatitis; Cracking of lips at corners (Cheilosis); lips and tongue become purple-red and shiny; Ocular problems: Light Sensitivity, Blurred Vision
Food Sources:
Liver, Yeast, Egg White, Whole Grains, Meat, Poultry, Fish, Legumes, Milk
Environmental/Geographic Sources:
None listed
Supplemental information:

Vitamin B2 (Wikipedia)

Riboflavin

Chemical structure
Clinical data
Trade names	many
Synonyms	vactochrome, lactoflavin, vitamin G
AHFS/Drugs.com	Monograph
Pregnancy category	US: A (No risk in human studies) and C
Routes of administration	by mouth, IM, IV
ATC code	A11HA04 (WHO)
Legal status
Legal status	US: OTC
Pharmacokinetic data
Excretion	Urine
Identifiers
IUPAC name 7,8-Dimethyl-10-[(2S,3S,4R)-2,3,4,5-tetrahydroxypentyl]benzo[g]pteridine-2,4-dione
CAS Number	83-88-5  Y
PubChem CID	493570
IUPHAR/BPS	6578
DrugBank	DB00140
ChemSpider	431981
UNII	TLM2976OFR
KEGG	D00050
ChEBI	CHEBI:17015
ChEMBL	CHEMBL1534
E number	E101 (colours)
ECHA InfoCard	100.001.370
Chemical and physical data
Formula	C17H20N4O6
Molar mass	376.37 g·mol−1
3D model (JSmol)	Interactive image
SMILES c12cc(C)c(C)cc1N=C3C(=O)NC(=O)N=C3N2C[C@H](O)[C@H](O)[C@H](O)CO
InChI InChI=InChI=1S/C17H20N4O6/c1-7-3-9-10(4-8(7)2)21(5-11(23)14(25)12(24)6-22)15-13(18-9)16(26)20-17(27)19-15/h3-4,11-12,14,22-25H,5-6H2,1-2H3,(H,20,26,27)/t11-,12+,14-/m0/s1 N Key:AUNGANRZJHBGPY-SCRDCRAPSA-N

Riboflavin, also known as vitamin B₂, is a vitamin found in food and used as a dietary supplement. As a supplement it is used to prevent and treat riboflavin deficiency and prevent migraines. It may be given by mouth or injection.

It is nearly always well tolerated. Normal doses are safe during pregnancy. Riboflavin is in the vitamin B group. It is required by the body for cellular respiration. Food sources include eggs, green vegetables, milk, and meat.

Riboflavin was discovered in 1920, isolated in 1933, and first made in 1935. It is on the World Health Organization's List of Essential Medicines, the most effective and safe medicines needed in a health system. Riboflavin is available as a generic medication and over the counter. In the United States a month of supplements costs less than 25 USD. Some countries require its addition to grains.