What is the daily requirement for vitamin b12?

Vitamin B12
Life Stage Recommended Amount
Birth to 6 months 0.4 mcg
Infants 7–12 months 0.5 mcg
Children 1–3 years 0.9 mcg
Children 4–8 years 1.2 mcg
Children 9–13 years 1.8 mcg
Teens 14–18 years 2.4 mcg
Adults 2.4 mcg
Pregnant teens and women 2.6 mcg
Breastfeeding teens and women 2.8 mcg

micrograms: mcg

Vitamin B12 is found in a wide variety of animal foods. Plant foods have no vitamin B12 unless they are fortified. You can get recommended amounts of vitamin B12 by eating a variety of foods including the following:

Fish, meat, poultry, eggs, milk, and other dairy products contain vitamin B12.
Clams, oysters, and beef liver are some of the best sources of vitamin B12.
Some breakfast cereals, nutritional yeasts, and other food products are fortified with vitamin B12.

Source: National Institutes of Health
Office of Dietary Supplements
U.S. Department of Health and Human Resources