Dosage. The recommended daily intake of vitamin B12 for seniors is 2.4 micrograms. Some supplements may contain a higher dosage, ... The recommended daily intake of B12 for seniors is 2.4 mcg.

The ideal dose of vitamin B12 varies based on your sex, age, and reasons for taking it. This article examines the scientific evidence behind recommended dosages for B12 for different people and uses.

DEAR DR. ROACH: I am 73, and I was worried about dementia. Turns out, I am “normal.” However, the neurologist told me to take 2,000 mcg of B12 daily. My multivitamin has 100 mcg, which is ...

For reference, these are the Recommended Dietary Allowances (RDA) for vitamin B12 by sex and age group — indicating the daily amount needed for healthy individuals : Men 14–18: 2.4 mcg Men 19 ...

Q: I’ve been taking a multivitamin because senior citizens need more vitamin B12 than younger people. I heard that I should take B12 separately, because the multivitamin doesn’t contain enough ...

Best supplements for seniors: Four recommended vitamins and minerals for people over 50 ... Vitamin B12. Known as cyanocobalamin, vitamin B12 "is used by cells in the body, ...