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In another investigation by Fahmy et al., B12 serum levels were positively correlated with language, visuospatial, and global cognitive scores but negatively correlated with attention ability in patients with MS [125]
While Vitamin B12 injections can help improve energy levels, its important to rule out any underlying medical conditions contributing to your symptoms
To absorb it from food or pills, your stomach must produce enough acid and a protein called intrinsic factor
The essential amino acid tryptophan also depends on B6 for its utilization
Over several weeks, steadier support as your baseline levels rebuild, especially if you were low
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