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How well are vitamin B supplements absorbed?

Answered on August 19, 2014
Created December 13, 2011 at 3:04 AM

In particular, vitamin B1 (thiamine). I noticed on Cronometer that I get about 50% of the RDA for B1 (I know, RDA isn't necessarily important...). I was thinking of taking Jarrow B-Right which has 25mg of B1 (1667% of RDA). After reading the supplements thread and how vitamin C tablets are poorly absorbed, it got me thinking about how well all these things are absorbed. Would I absorb enough from the B-Right to get my B1 to 100%?

8508fec4bae4a580d1e1b807058fee8e

(6259)

on April 15, 2012
at 03:42 PM

There are problems with synthetic folic acid - please see. http://chriskresser.com/folate-vs-folic-acid

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2 Answers

1
F3c72b77f87bd6921f81147a1781c365

on January 18, 2012
at 11:53 PM

Always opt for liquid vitamins: with B vitamins, this is crucial for absorption. http://www.untrainedhousewife.com/the-best-food-and-supplement-vitamin-sources-b-vitamins

If you like peanuts/peanut butter and chicken, trust that you're getting a much more vibrant supplement from these foods as well.

P.S. Personal opinion - I'd rather take more than what I think I need, so as to give the body what it needs and my pee can release the rest. Good luck to you.

0
2870a69b9c0c0a19a919e54cb3a62137

(1520)

on December 13, 2011
at 08:36 AM

Synthetic folic acid has a higher bioavailability than the natural form. But it must go through a four step conversion process to be equal. So it's not just absorption but also having the right form that matters. I doubt that with 1667% of RDA, the absorption would be too low to get at least the 50%. Have you tried google?

8508fec4bae4a580d1e1b807058fee8e

(6259)

on April 15, 2012
at 03:42 PM

There are problems with synthetic folic acid - please see. http://chriskresser.com/folate-vs-folic-acid

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