Vitamin B12 and folate are interrelated in function. They convert carbohydrates into energy, and are vital in the metabolism of fats and protein. They play an important role in the maintenance of muscle tone in the GI tract, the functioning of the nervous system, and the integrity of skin, hair, and the liver. Folic acid is essential for healthy fetal neural development. This formula provides B12 as methylcobalamin, the most bioavailable form of this vitamin, and includes natural vitamin C to make it more absorbable.