Biotin, also known as vitamin H or B7 and C10H16N2O3S (Biotin; Coenzyme R, Biopeiderm), is a B-complex vitamin which is important in the catalysis of essential metabolic reactions to synthesize fatty acids, in gluconeogenesis, and to metabolize leucine.
Vitamin C is absorbed from the small intestine, circulated in the blood, and stored in the tissues.
The richest natural sources of vitamin C are citrus fruits and their juices, strawberries, cantaloupes, raw vegetables-especially peppers, parsley, broccoli, cauliflower, kale, Brussels sprouts, turnip greens, cabbage, tomatoes, potatoes, and bean sprouts.
Vitamin C probably increases the absorption of iron, although this effect is mild.