Vitamin B-12 (cyanocobalamin) is a water soluble vitamin necessary for the maintenance of a healthy nervous system and for the production of energy from fats and proteins.* Vitamin B-12 is also essential for the synthesis of DNA during cell division and therefore is especially important for rapidly multiplying cells such as blood cells.* In addition adequate intake of vitamin B-12 along with folic acid and vitamin B-6 is critical for the conversion of homocysteine to methionine thereby supporting a healthy cardiovascular system.* While B-12 is stored in the liver dietary sources are of animal origin only (meat and dairy). Therefore supplementation with B-12 may be especially important for strict vegetarians.