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  2. Vitamin B12 Is a Power Nutrient. Here's How to Know If ... - AOL

    www.aol.com/vitamin-b12-power-nutrient-heres...

    The National Institutes of Health recommends that the average man consume a mere 2.4 micrograms a day, which is actually the lowest daily recommended dose of any vitamin. “Vitamin B12 ...

  3. Vitamin B12 - Wikipedia

    en.wikipedia.org/wiki/Vitamin_B12

    Severe vitamin B 12 deficiency is initially corrected with daily intramuscular injections of 1000 μg of the vitamin, followed by maintenance via monthly injections of the same amount or daily oral dosing of 1000 μg. The oral daily dose far exceeds the vitamin requirement because the normal transporter protein-mediated absorption is absent ...

  4. Vitamin B12 deficiency - Wikipedia

    en.wikipedia.org/wiki/Vitamin_B12_deficiency

    Initially in high daily doses, followed by less frequent lower doses, as the condition improves. [3] If a reversible cause is found, that cause should be corrected if possible. [11] If no reversible cause is found, or when found it cannot be eliminated, lifelong vitamin B 12 administration is usually recommended. [12]

  5. Human nutrition - Wikipedia

    en.wikipedia.org/wiki/Human_nutrition

    The Recommended Dietary Allowance (RDA) for vitamin B12 is 0.9-2.4 μg/day, while the estimated average requirement in the U.S. and Canada is 0.7-2 μg/day. Elderly individuals with plasma vitamin B12 levels below 148 pmol/L are considered severely deficient, and those with levels between 148 and 221 pmol/L are marginally deficient.

  6. These High-Quality Vitamin B12 Supplements Can Help ... - AOL

    www.aol.com/lifestyle/high-quality-vitamin-b12...

    Again, the daily recommended dietary allowance of vitamin B12 for most adults is 2.4 micrograms, stretching up to 2.6 and 2.8 micrograms if you’re pregnant or nursing.

  7. The 5 Most Important Vitamins That Medical Experts Say Aid ...

    www.aol.com/most-important-vitamins-medical...

    It's recommended for adults to get about 2.4 micrograms of B12 daily. Zinc. This vitamin has a slew of jobs in the body. For starters, zinc aids in carb and fat metabolism, turning these fuel ...