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

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

    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.

  3. How vitamin B12 could give you an energy boost - AOL

    www.aol.com/finance/vitamin-b12-could-energy...

    Vitamin B12, according to the ... starting with .5 mcg per day for infants up to 2.4 mcg for teens and adults and even more—2.6 mcg and 2.8 mcg, respectively, for women who are pregnant or ...

  4. Wait, Should You Be Taking Vitamin D2 or D3? - AOL

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    There's lots of confusion around the difference between vitamin D2 and vitamin D3, and which is best for whom. ... women to prevent birth defects; B12 is ... and 70 years of age the recommended ...

  5. 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] A nasal spray is also ...

  6. 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 ...

  7. Reference Daily Intake - Wikipedia

    en.wikipedia.org/wiki/Reference_Daily_Intake

    The recommended maximum daily intake of sodium – the amount above which health problems appear – is 2,300 milligrams per day for adults, about 1 teaspoon of salt (5.9 g). The recommended adequate intake of sodium is 1,500 milligrams (3.9 g salt) per day, and people over 50 need even less."