Vitamin B12 (cobalamin) is one of the water-soluble B-complex vitamins. This vitamin supports numerous processes in the body.

The vitamin contributes to
- normal red blood cell formation
- normal cell division
- normal energy metabolism
- a normal function of the immune system
- normal psychological functions
- and can contribute to the reduction of tiredness and fatigue

The following groups of people may have higher vitamin B12 requirements:
Adolescents, pregnant and breastfeeding women, vegetarians and elderly people.

Sources: Fish, meat, eggs, milk and dairy products and brewer's yeast.