Vitamin B2: Riboflavin

IMAGEVitamin B2, also called riboflavin, is a water-soluble vitamin. Water-soluble vitamins are stored in the body in very limited amounts and are excreted through the urine. Therefore, it is a good idea to have them in your daily diet. Vitamin B2 is a component of two enzymes: flavin mononucleotide (FMN) and flavin adenine dinucleotide (FAD). These coenzymes are important in energy production.


Riboflavin’s functions include:
  • Assisting in energy production
  • Helping to synthesize normal fatty acids and amino acids
  • Helping the nervous system to function efficiently
  • Aiding in cellular growth
  • Assisting in the metabolism of certain other vitamins

Recommended Intake

Age Group (in years) Recommended Dietary Allowance
Females Males
1-3 0.5 milligrams (mg) 0.5 mg
4-8 0.6 mg 0.6 mg
9-13 0.9 mg 0.9 mg
14-18 1.0 mg 1.3 mg
19+ 1.1 mg 1.3 mg
Pregnancy 1.4 mg n/a
Lactation 1.6 mg n/a

Riboflavin Deficiency

Riboflavin deficiency occurs as part of multiple nutrient deficiency states. Since riboflavin occurs in a wide variety of foods, deficiency symptoms are rare. Symptoms have been reported when daily riboflavin intake falls below 0.6 milligrams (mg). Symptoms of riboflavin deficiency include:
  • Cracks in the corner of the mouth (cheilosis)
  • Inflammation of the mucous membranes of the mouth
  • Sore or inflamed tongue (glossitis)
  • Reddening of the eyes
  • Eyes that tire easily, burn, itch, or are sensitive to light
  • Unusual skin inflammation (dermatitis) characterized by simultaneous dryness and greasy scaling

leave comments
Did you like this? Share with your family and friends.
Related Topics: Health And Healing
Meet Our Health Experts
Healing and Transformation

Healing and Transformation

David G. Arenson
New! How to Dream the World
beginners heart

Beginner's Heart

Britton Gildersleeve
leafturn oceanstill


Our Free Newsletter
click here to see all of our uplifting newsletters »