Vitamin C (ascorbic acid)

Vitamin C (ascorbic acid, ascorbate) is a non-cumulative water-soluble vitamin that is required in a variety of metabolic processes, and functions primarily in the maintenance and repair of collagen. Vitamin C is also an important coenzyme, assisting in the metabolism of tyrosine into the catecholamine neurotransmitters (e.g. dopamine), the metabolism of tryptophan in the indolamines neurotransmitters (e.g. serotonin), in the conversion of folic acid into tetrahydrofolic acid (THFA), and in thyroid function and cholesterol metabolism.