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Levels over 10 umol/L are widely considered to be high and thus a reflection of low B12, B6 and/or folate
How B12 Injections Work B12 injections deliver a high dose of the vitamin directly into the bloodstream, bypassing the digestive system
Nasca C, Bigio B, Lee FS, et al
Kwon, D
They are typically a sign of successful supplementation and are well within the bodys tolerance range (source: Harvard T.H
Research shows that 20% to 50% of these patients might not have enough B12
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