Vitamin B6 is a cofactor that helps activate over 100 different enzymes involved in hundreds of biochemical tasks in the body. It is used to metabolize amino acids (protein management) as well as lipids (fats) and nucleic acids. As protein intake increases, so does the need for B6. This vitamin may help affect homocysteine levels, a factor in cardiovascular health. Vitamin B6 is important for the production of energy and for proper nervous system function.