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Upstream synthesis is not anonymized through repackaging, and the on-page COA library stays accessible for review through the full procurement and audit cycle

Stores sit mainly in the liver and last years, so deficiency develops slowly and quietly, which is precisely why it gets missed

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The water-soluble nature means that passive diffusion can occur when very high doses are consumed orally , which is why high-dose oral supplements (1,0002,000 micrograms) can be effective even in patients with impaired intrinsic factor production

Individual traits and consumption methods also matter