Vitamin B2 (Riboflavin)

Vitamin B2 refers to riboflavin and its derivative compounds. The body converts riboflavin into two different cofactors, FMN and FAD. These cofactors are essential in the body’s metabolic processes. FAD in particular is used to perform reduction-oxidation, or redox reactions. Redox reactions all involve the transfer of electrons. These types of reactions are necessary in the citric acid cycle, which produces energy and converts oxygen and glucose into carbon dioxide. 

The deficiency of vitamin B2 is called ariboflavinosis, and is marked by muscle weakness, inflammation, and various other symptoms. Milk, beef, and tomatoes are excellent sources of riboflavin.