How much b12 does everyone take per day? See pic below – this store bought b12 is 2083 times? the daily recommendation. I had very healthy levels about 3 months ago but after not taking any and feeling all tingly will be going back to it. Do I get b12 closer to the daily recommendation? Does such high dosage affect the internal organs like liver, etc?
by Prudent_Raccoon_3219
5 Comments
I’m a vegan who also has Crohn’s disease. I use a sublingual (under the tongue) B12 lozenge a couple times a week to keep my levels up. I don’t worry too much about the dosage on the bottle.
Methyl and vegan, 1000 mcg daily, chewable — this is the dosage my doctor suggested…been taking it for 5 years or so, I like this brand:
https://www.amazon.com/Jarrow-Formulas-Methylcobalamin-B12-Supports/dp/B002FJW3ZY/
I take 2500 mcg – once/**week**.
5000 mcg daily is way too much unless you are correcting a deficiency.
Megadosing any vitamin other than for physician directed deficiency correction, is NOT beneficial, and is potentially harmful, and that includes for water soluble B vitamins.
People need to stop thinking “more is better”, or that you just “pee out the excess”. This is outdated thinking.
https://www.ajmc.com/view/analysis-says-excessive-vitamin-b12-concentration-can-increase-mortality-risk
B12 water soluble so you pee out any excess. Unlike most other vitamins, there’s no known cases of B12 toxicity nor overdosing: https://perniciousanemia.org/b12/toxicity/
However, as someone else posted, it’s possible too much could affect mortality rate as well.
I take sublingual lozenges twice a week (1,000 mcg per dose) for years, and my serum B12 level is fine (it’s actually on the higher end of the healthy range).
5,000 mcg is quite a lot unless you have a confirmed deficiency.
Here’s an excerpt from Dr. Michael Gregers’ [post on B12](https://nutritionfacts.org/topics/vitamin-b12/):
“For adults under age 65, the easiest way to get B12 is to take at least one 2,000 mcg supplement each week or a daily dose of 50 mcg. Note that these doses are specific to cyanocobalamin, the preferred supplemental form of vitamin B12, as there is insufficient evidence to support the efficacy of the other forms, like methylcobalamin.
As we age, our ability to absorb vitamin B12 may decline. For those over 65, the supplementation should probably be increased up to 1,000 mcg of cyanocobalamin each day.”