We only need about 2.4 mcg of B12 daily. So choose a multivitamin with a low level of B12 (perhaps 10-20mcg), and relatively low levels of everything else. Alternately, you can take the smallest dose of B12 you can find intermittently, perhaps every couple days, or a couple times a week, and get your blood levels checked to make sure it is sufficient.
Sometimes people with a severe deficiency need to get B12 by injection. This would be something to discuss with a doctor after having your blood or urine levels tested. How Much B12 Should You Take? The US RDA minimum for Vitamin B12 is 2.4 mcg per day …
R proteins help guide B-12 to the small intestine, and also prevent vitamin B-12 from being used by bacteria in the gut. In the small intestine, pancreatic enzymes break down R proteins. Vitamin B-12 then binds to intrinsic factor, which guides B12 to be absorbed by the small intestine cells, or enterocytes.
Founded: Jun 17, 2008
Dec 27, 2018 · You need 2.4 micrograms of vitamin B-12 each day. If you are pregnant, your recommendation goes up to 2.6 micrograms, which increases further to 2.8 micrograms while you are breastfeeding, explains the Linus Pauling Institute.
Generally, you don’t need to take vitamin B-12 supplements to maintain healthy B-12 levels, and a well-rounded diet provides all the vitamin B-12 you need. However, if you consult a doctor to take vitamin B-12 supplements, they can recommend a dose that will prevent B-12 deficiency.
Back in the day, we used to get B12 by drinking well water / water from mountain streams or by getting in contact with soil rich in organic matter as we didn’t wash our vegetables to the extent we do today.