Vitamin B2, Riboflavin, is essential to the formation of two major coenzymes that are involved in energy metabolism, cellular respiration, antibody production, and growth:

1. flavin mononucleotide,
2. flavin adenine dinucleotide.

These coenzymes are involved in the metabolism of other vitamins:

1. Vitamin B3 - Niacin,
2. Vitamin B6 - Pyridoxine,
3. Vitamin B9 - Folate.

Riboflavin deficiency is rare. It is found in bigger quantities in almond, leafy greens, and mashrooms.