[DOI] [PubMed] [Google Scholar] 87.Heal DJ, Smith SL, Fisas A, Codony X, Buschmann H
The National Institutes of Health cites muscle spasms as a symptom of low B12 levels, alongside tingling, soreness, weakness and numbness
When you swallow a B12 pill, several steps have to work for it to be absorbed: stomach acid and the enzyme pepsin must release B12 from food or the supplement, the stomach must secrete a protein called intrinsic factor that binds to B12, and the B12-intrinsic factor complex must reach the ileum (the end of the small intestine) where it is finally absorbed
For almost a century, not one harmful case of overdose has been recorded in medical literature
The reason is because after the 2 nd round, there is often additional improvement noted
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