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b12 injections cause diarrhea Common Side Effects of Lipotropic Vitamin B12: Symptoms, Dosage &
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[DOI] [PubMed] [Google Scholar] 39.Koyama K., Yoshida A., Takeda A., Morozumi K., Fujinami T., Tanaka N

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Myelin basic protein makes up a significant percentage of the myelin sheath around nerves and requires methylation for its stability

The USDA Agricultural Research Service used the 148 pmol/L threshold in their national prevalence studies, and the NIH Office of Dietary Supplements acknowledges that lab reference ranges can vary between institutions
