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Because gastric absorption rates are unpredictable compared to vitamin B12 injections, according to Foxx, most oral vitamin B12 supplements provide much more than the recommended amount to account for the discrepancy between the dose you take and benefit from (1)
I believe it affects everyone differently
After that, the preservative effect diminishes and contamination risk increases even with proper technique
Oral B12 requires a protein called intrinsic factor in the stomach to be absorbed properly
It plays an important role in the many functions within the body
It is most commonly supplied as the iodide salt, with the molecular formula C 10 H 11 IN 2 , a molecular weight of approximately 286.11 g/mol, and CAS number 42464-96-0
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