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10 µg B12 Not Enough

On March 6, I posted that in light of new research, I was raising the lower limit of my single-dose B12 supplement recommendations from 10 µg to 25 µg. This was an extrapolation, but I just came across some new research to reinforce this change. A study from India shows that 10 µg of B12 in one single dose per day was not enough to lower homocysteine to ideal levels.

Details here.

Thanks, Tom!

This entry was posted on Thursday, May 27th, 2010 at 6:57 am and is filed under Vitamin B12. You can follow any responses to this entry through the RSS 2.0 feed. You can skip to the end and leave a response. Pinging is currently not allowed.

3 Responses to “10 µg B12 Not Enough”

  1. Marjorie Ramos Says:
    May 28th, 2010 at 5:52 pm

    A very simple question. I now take 1 1000 mcg sublingual pill a day. I don’t know the ug conversion. Can you help me? Am i taking enough according to the new study or do I need to up it by 2.5 times?

    Thanks. Love your blogs. Read them every day!
    Marjorie

  2. Jack Norris RD Says:
    May 28th, 2010 at 11:42 pm

    Hi Marjorie,

    µg is the same as mcg. They both stand for microgram. 1,000 mcg per day is more than you need, 2 to 3 times a week would be enough.

    Thanks for the kind comments about my blog!

    Jack

  3. Pat Says:
    July 19th, 2011 at 6:15 pm

    my neurologist said that 1,000 mcg per day is good for me on a vegan diet

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