B12 Levels are too high

My b12 blood test levels came back over 2000. I have MS and have been taking b12 supplements for three years. If I stop taking them, will my levels come back down? How long will it take? I have read a ton of scary things on the internet about levels being too high...can you tell me what it really means when they are too high? My Dr. just shrugged it off and told me to stop the supplements.

Comments for B12 Levels are too high

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Levels Too High When Taking Supplements
by: Kerri Knox, RN

When your levels are high when you are taking supplements, this is entirely meaningless and expected. You are wasting your health care dollars, and causing yourself unnecessary grief by testing Vitamin B12 Levels when you are taking Vitamin B12 supplements.

What you are reading on the internet about high vitamin B12 levels is when someone who is NOT taking supplements and they have high levels. This is indicative of a MTHFR Gene Mutation, which is a serious condition that needs to be treated appropriately.

If your levels don't come down, you may want to get tested for MTHFR. However, if you've been taking B12 supplments for 3 years without problems, then it's almost certainly that your levels are high BECAUSE you are taking supplements. This is nothing to worry about, is an entirely expected outcome, and should be ignored.

Kerri Knox RN Immune Health Queen

Kerri Knox, RN- The Immune System Queen
Functional Medicine Practitioner
Immune System
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PS: If you appreciate the free help that I give on my site, please consider making your next supplement purchase through my Health Store in order to help keep this site in operation.

high b levels
by: Anonymous

My naturopath told me high levels can be because the B12 is not being utilized in the cells,that it is only in the blood and that you can be deficient despite the high level.There is another test which should be done to be sure.

Yes, it's a genetic test
by: Kerri Knox, RN

Yes, you should get a genetic test. The common problem is a MTHFR Gene Mutation, and you can learn how to get tested for that on the MTHFR page linked above. Which is why I referenced it in my last answer on this thread.


Kerri Knox RN

Kerri Knox, RN- The Immune System Queen
Functional Medicine Practitioner
Immune System
Side Effects

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