Vitamin B12 2 articles

Vitamin B12, or cobalamin, is a water-soluble B vitamin found naturally mainly in animal-derived foods and supplied in fortified foods and supplements. Common supplemental forms include cyanocobalamin and methylcobalamin, making fortification especially relevant in plant-based diets. Label review should distinguish total vitamin B12 from the chemical form used in a product; the nutrient is also separate from folate even though both participate in related one-carbon and blood-cell biology.