The coenzyme FAD is formed from what vitamin
1 It contributes to normal energy yielding metabolism-Vitamin B2 is required in its coenzyme form (FAD) for participation in the Citric Acid cycle to produce energy.here is decreased absorption in cases of gall bladder or liver disease and are associated with decreased dietary intake of meat and dairy products. 1  It contributes to normal energy yielding metabolism-Vitamin B2 is required in its coenzyme form (FAD) for participation in the Citric Acid cycle to produce energy.