Role: As part of coenzyme FMN (flavin mononucleotide) and FAD (flavin adenine dinucleotide), it functions in energy production and metabolism of amino acids. Involved in oxidation/reduction reactions. Required for vision.
Deficiency: Ariboflavinosis deficiency disease: glossitis and stomatitis (inflamed tongue and mouth), cheilosis (fissures at corners of mouth), seborrheic dermatitis (inflammation of skin’s oil-producing glands). Sensitivity to light. Ariboflavinosis usually coexists with other vitamin deficiencies.
Sources: Milk, other dairy products. Liver, other organ meats. Enriched or fortified grain products; whole-grain products. Dark-green vegetables.
Toxicity: Not determined.