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Doctors estimate 1.5% to 15% of people have vitamin B12 deficiency
Both compounds require subcutaneous administration for bioavailabilityoral forms degrade rapidly in gastric acid and hepatic first-pass metabolism
That low-grade fatigue, brain fog and flat mood are exactly the early signs of low B12 and theyre easy to write off as just life in a town that runs this hard
No severe headaches were reported, and no participant discontinued due to this symptom
