Vitamin B-12 is necessary for the production of energy from fats and proteins and is well known for its critical role in DNA synthesis, as well as in homocysteine metabolism. A crucial advantage attributable to Nature's Answer Methyl B12 is a the key, superior bioactive form of B12.ontributes B-12 is thought to help support energy metabolism – the conversion of protein, carbohydrates and fats into energy your body can use. It can also help support the healthy production of red blood cells, proper brain and nerve function, mental focus and concentration, and normal homocysteine levels for a healthy heart. Vitamin B12 is a vital B Vitamin that helps support cellular energy production by assisting you in making red blood cells to deliver oxygen throughout your body.