2.4 mcg for adults and 2.6 - 2.8 mcg for women who are pregnant or lactating.
Children need 0.9 - 2.4 mcg per day.
Like the other B vitamins, vitamin B12 is important for metabolism. It helps in the formation of red blood cells and in the maintenance of the central nervous system.
Vitamin B12 is the one vitamin that is available only from fish, poultry, meat or dairy sources in food.
No nuts contain a significant amount of vitamin B12.
Hot Dog (Beef)
Legumes do not contain a significant amount of vitamin B12.