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Old 09-12-2014, 01:59 PM
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mrsD mrsD is offline
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Location: Great Lakes
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mrsD mrsD is offline
Wisest Elder Ever
mrsD's Avatar
 
Join Date: Aug 2006
Location: Great Lakes
Posts: 33,508
15 yr Member
Lightbulb

Japan has always been aggressive with B12 since their
Horrific epidemic of low B12 due to use of a toxic drug
For diarrhea in the early 1970's. They also had a study years
Ago for MS using about 40 mg a day oral.

Oral works for most people. You will get up to 13 mcg from
1000 mcg taken on an empty stomach. That is about 3 times
The RDA from food. Methyl form is preferred because there
Are many with the DNA mutation that prevents activation
To methyl form. There is no data yet on absorption from 5 mg
But i wouldn 't think it would be much over 20mcg.
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