Vitamin B2 (Riboflavin)
Vitamin B2 (riboflavin) is a water-soluble vitamin present in food and available as a dietary supplement. Riboflavin is an essential component of the flavin coenzymes, including flavin mononucleotide (FMN) and flavin adenine dinucleotide (FAD). These flavins serve as cofactors in a number of redox reactions, specifically that of the enzyme succinate dehydrogenase. For patients deficient in riboflavin, cheilosis and corneal vascularization are characteristic findings.