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

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

    $41.95. Your Longevity Blueprint ... Preliminary research shows that a lack of vitamin B12 may be linked to trouble sleeping and feeling tired during the day. So, taking a B12 supplement may help ...

  3. Are You Taking Your Vitamins at the Right Time of Day? - AOL

    www.aol.com/taking-vitamins-time-day-141800957.html

    B-vitamins. Any time of day is fine, but morning may be best if you're in need of a little zip. This group of vitamins help release energy from carbs so that you can go, go, go, and they also play ...

  4. Is It Possible to Take Too Much B12? Here's What ... - AOL

    www.aol.com/lifestyle/possible-too-much-b12-here...

    Registered dietitians explain what vitamin B12 is, how much you need, and the potential side effects of taking too much. Skip to main content. 24/7 Help. For premium support please call: 800 ...

  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. Vitamin B12 deficiency - Wikipedia

    en.wikipedia.org/wiki/Vitamin_B12_deficiency

    Vitamin B 12 deficiency in the US and the UK is estimated to occur in about 6 percent of those under the age of 60, and 20 percent of those over the age of 60. [4] In Latin America, about 40 percent are estimated to be affected, and this may be as high as 80 percent in parts of Africa and Asia. [1]

  7. Hydroxocobalamin - Wikipedia

    en.wikipedia.org/wiki/Hydroxocobalamin

    Hydroxocobalamin, also known as vitamin B 12a and hydroxycobalamin, is a vitamin found in food and used as a dietary supplement. [1] As a supplement it is used to treat vitamin B12 deficiency including pernicious anemia. [1] [2] Other uses include treatment for cyanide poisoning, Leber's optic atrophy, and toxic amblyopia.