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Excess B12 possibly causing numbness and tingling

Neuropathy | Last Active: Aug 1 9:41pm | Replies (17)
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Profile picture for seekingsanders1957 @seekingsanders1957

I also started experiencing numbness & tingling in my arms & legs about a month ago. I had a B12 test taken and it came back 1535 which is significantly elevated. I was initially advised to take a B12 supplement because I am vegan. I was basically told that it was probably neuropathy after seeing a doctor. I am diabetic but my blood sugars levels have always been controlled. I think it's the elevated B12 levels, but my question is how long it will take for my B12 levels to fall back within normal ranges (days, weeks or months)? I stopped taking the B12 supplement two weeks ago, but I am still experiencing the tingling & numbness. I would appreciate any insights regarding this dilemma.

Sincerely John Sanders

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Replies to "I also started experiencing numbness & tingling in my arms & legs about a month ago...."
John, Volunteer Mentor | @johnbishop | Jul 21 8:35am

Hello John @seekingsanders1957, Welcome to Connect. I'm guessing it takes several months to reduce the B12 levels. You might want to scan through the following discussion on your question here:
-- B12 too high?: https://connect.mayoclinic.org/discussion/b12-too-high/

The Linus Pauling Institute has quite a few papers on B12 absorption if you want to do a deep dive - https://lpi.oregonstate.edu/search/osu?keys=b12%20absorption

Have you discussed the high levels with your doctor?

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jankavs | @jankavs | Jul 22 11:49am

I had b12 level at 2000 when I went to hospital for my symptoms that got so bad that I thought I might have had a stroke (before any diagnosis). I was told to just stop it altogether for awhile, but not told when to resume. I am vegan, so I resumed supplementation at a much lower dose about 3 months later. I now take 500 mg about 4 days per week.

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persistentc | @persistentc | Jul 22 3:24pm

I stopped the B12 back in March. My levels were taken again last week, and they were still quite high, not at toxic levels, but WAY above the normal range. The reading I have done since then suggests it may take YEARS for the B12 to be excreted.

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