Vitamin B 12 is found in various FTS approved foods foods, including beef, beef liver, blue cheese, clams, eggs, flounder, herring, liverwurst, mackerel, oysters, sardines, snappers and fermented cheeses.
It is not found in any vegetables. I always recommend additional B-12 to vegetarians for that reason.
Normal MINIMUM daily recommended intakes in micrograms (mcg) for vitamin B 12 are generally defined as follows:
Persons U.S.RDA (mcg) Canada RNI (mcg)
Infants birth to 3 years of age 0.3–0.7 0.3–0.4
Children 4 to 6 years of age 1 0.5
Children 7 to 10 years of age 1.4 0.8–1
Adolescent and adult males 2 1–2
Adolescent and adult females 2 1–2
Pregnant females 2.2 2–3
Breast-feeding females 2.6 1.5–2.5
I take a multi each day which contains 18 MCG of B-12 so I don't take an additional tab. Lack of B-12 symptoms include weakness, fatigue and anemia. If you're experiencing any of these symptoms AND you are taking the lowest recommended dosage of B-12 on a daily basis you should consider increasing your intake. Of course you should always check with the Doc first