Vitamin B2

Riboflavin or vitamin B2 is part of coenzymes flavinadenominemononucleotide (FAD) and flavinmononucleotide (FMN), plays a key role in oxidative metabolism.

Source
A small amount is found in many foods. Good sources are meat, fish, offal, vegetables, milk, cheese, eggs, whole grain cereals. Recommended daily intake for adults: 1.2 to 1.5 mg

Deficiency
Deficiency caused by the lack of riboflavin in food is sparse, may be secondary due to malabsorption, enterocolitis, coeliac disease, chronic hepatitis in children is often a broad-spectrum antibiotics. Clinical picture : seborrheic dermatitis, conjunctivitis, sometimes keratitis, photophobia, impaired growth, angular cheilitis, peeling lips, mucous membranes (cheilosis), atrophic glossitis, dysphagia, normocytic normochromic anemia and bone marrow hypoplasia. Laboratory evaluation: decreases secretion of vit. B2 below 32 mg/24 h, decreased concentrations of glutathione and glutathione reductase in erythrocytes.

Excess
Signs of excess are not known.

Related articles

 * Fat Soluble Vitamins
 * Water Soluble Vitamins