Vitamin B₁

Vitamin B₁₂ is a water-soluble vitamin containing a cobalt atom. In nature, it occurs in several forms (cyanocobalamin, methylcobalamin, hydroxocobalamin).

Formula

It is necessary for hematopoiesis, normal nervous system function, DNA synthesis, and metabolism of amino acids and fatty acids. Deficiency causes pernicious anemia, neurological disorders, and fatigue.