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General description	Hydrosoluble vitamin important in building antioxidant enzymes.
Found	- milk, cheese, yogurt, eggs - liver, kidney meat - beans, peanuts, soybeans - green and leafy vegetables - fruit
Anti-aging role	- vital for formation FAD (flavin adenine dinucleotide) and FMN (flavin mononucleotide) - metabolism of carbohydrates, proteins and fats - protect against free radical damage - vision (cataract) - skin, hair, nails - reduce frequency of migraines - useful in people with burns, chronic diarrhea, cirrohosis, alcoholism and cancer
Deficiency symptoms	Cheilosis or cracks and sores in the corneas of the mouth. Frayed or scaling lips, inflamed tongue with purplish or magenta color. - Flaking skin around the nose, eyebrows, chin, cheeks, earlobes, hairline. - Cataract formation. - Difficulty walking, muscular weakness, depression, nervousness, irritability. - Pregnant women with B 2 deficiency - preeclampsia.
Therapeutic doses	25 - 100 mg RDA for men - 1,3 mg RDA for women - 1,2 mg
Maximum safe level	200 mg (long and short term)
Side effects	Not established
Interactions	- propantheline - phenothiazines - tricyclic antidepressants - probenecid

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