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Vitamin B12 has a core made of another molecule (i.e., cobalt)
While oral supplements can be a way to replace B12, oral supplements dont always absorb in the digestive system
In the United States, the Food and Drug Administration (FDA) oversees the regulation of BAC water through the drug approval process and Good Manufacturing Practice requirements
Unfortunately, studies on this topic have mainly focused on normalising serum B12 concentrations with oral supplementation and should be interpreted with caution since the specific goal of treatment in symptomatic B12 deficiency is alleviating symptoms, and NOT to normalize B12 concentrations in the blood
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