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Unlike some medications with circadian-dependent metabolism, B12 absorption mechanisms function consistently throughout the 24-hour cycle

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This route delivers higher hippocampal concentrations with lower systemic exposure, reducing peripheral side effects while maintaining therapeutic receptor activation longer at the target site

What this does NOT do: protect the N-terminus

Genetic determinants of serum vitamin B12 and their relation to body mass index We found no support for a causal role of decreased serum vitamin B12 levels in obesity