This quote from the Linus Pauling Institute suggests calcium is needed for B12 absorption:
Quote:
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Metformin, a medication for individuals with type 2 (non-insulin dependent) diabetes, decreases vitamin B12 absorption by tying up free calcium required for absorption of the IF-B12 complex. This effect is correctable by drinking milk or taking calcium carbonate tablets along with food or supplements (5). Previous reports that megadoses of vitamin C destroy vitamin B12 have not been supported (46) and may have been an artifact of the assay used to measure vitamin B12 levels (6).
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from
http://lpi.oregonstate.edu/infocente...ns/vitaminB12/
How UNBOUND B12 would be affected is not clear to me.
Since we don't see the recommendation that I use to only take on an empty stomach being applied even though that rule is applied to DRUGS in microgram amounts, I don't think this question has been addressed clearly in studies yet.
When the new form of B12 hits the shelves soon, there may be more absorption data released.
http://www.emisphere.com/oral_vitamin_b12.html
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Weezie looking at petunias 8.25.2017
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