Brief introduction
Vitamin B12, also known as cobalamin, is a water-soluble vitamin that is an essential nutrient for maintaining the health of the nervous system, the formation of red blood cells, and the production of DNA. As the largest and most complex of all the vitamins, Vitamin B12 plays a crucial role in the metabolism of every cell in the human body. This vitamin is unique because it cannot be produced by plants or animals but is synthesized by certain bacteria. Due to its critical functions and the body's limited ability to store it, adequate intake through diet or supplementation is vital.