B12 Too High

[dube]

Bloodwork came back today with my b12 at 1933 and it should be under 928. I have been taking b12 sublingual 2500 mcg for over a year, daily. Sometimes missing a day...does this mean I'm taking too much?

Someone told me supplements cannot increase the counts...which does not make any sence to me, than why take them right?

[ravenwoodglass]

Yes you should stop taking it. Then have your doctor recheck your levels periodically. Your body may be processing it from your food again and you may not need to take the sublinguals any longer but if your levels drop to a low level like 500 or so then start the supplements again.

[dube]

The reason why you take sublingual is to make the counts go up in your blood correct?

[Jestgar]

yes, taking any vitamin should make the levels increase in your blood.

[Strawberry-Jam]

Wait so B12 is a vitamin you can overdose on...??

[modiddly16]

I'm kinda jealous......my b12 count was 125 which they called "freakishly low" at the dr. I started taking the shots

[Jestgar]

b12 is not toxic (that I could find when I googled). Since it's water soluble it clears out of your system pretty quickly when there's too much.

[ravenwoodglass]

Wait so B12 is a vitamin you can overdose on...??

Not according to the NIH. However if your levels are very high you are wasting your money.

Health Risks from Excessive Vitamin B12

The IOM did not establish a UL for vitamin B12 because of its low potential for toxicity. In Dietary Reference Intakes: Thiamin, Riboflavin, Niacin, Vitamin B6, Folate, Vitamin B12, Pantothenic Acid, Biotin, and Choline, the IOM states that "no adverse effects have been associated with excess vitamin B12 intake from food and supplements in healthy individuals" [5].

Findings from intervention trials support these conclusions. In the NORVIT and HOPE 2 trials, vitamin B12 supplementation (in combination with folic acid and vitamin B6) did not cause any serious adverse events when administered at doses of 0.4 mg for 40 months (NORVIT trial) and 1.0 mg for 5 years (HOPE 2 trial) [62,63].

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[dube]

Thanks everyone! I just went off the 2500 B12. I think I was just overdoing it...

[frieze]

were you taking METHYLcobalamin?

I would think stopping for a little while, and then maybe once a week.

There really is NO upper, unsafe limit.

good luck

[dube]

were you taking METHYLcobalamin?

I would think stopping for a little while, and then maybe once a week.

There really is NO upper, unsafe limit.

good luck

No I was taking cyanocobalamin 2500 mcg's subligual. My vitamin specialist said I should take methylcombalamin instead if I choose to go back and continue taking them.