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From there, vitamin B12 combines with a protein called intrinsic factor so that it can be absorbed further down in the small intestine
Common signs include persistent fatigue (even after a full nights sleep), brain fog, mood swings or irritability, numbness or tingling in the hands or feet, and a weakened immune system
I would respectfully ask if the B12 test could be repeated, I have learned here that B12 supplementing can alter folate levels so I wonder if your folate level being considerably above the high end of the range has masked your B12 deficiency and affected your B12 levels
Treatment with intranasal cyanocobalamin should be delayed until symptoms resolve in patients with nasal congestion, allergic rhinitis, and upper respiratory infection
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