(2) Milk Explanation: Vitamin B19 also called cobalamin, is a water-soluble vitamin with a key role in the normal functioning of the brain and nervous system, and for the formation of blood. Vitamin B12 is found in foods that come from animals, including fish and shellfish, meat (especially liver), poultry, eggs, milk, and milk products. While lacto-ovo vegetarians usually get enough B12 through consuming dairy products, vegans will lack B12 unless they consume B12-containing dietary supplements or B12-fortified foods.