pain in arm after b12 injection Vitamin Sites: All You Need to Know If your vitamin B12 levels

B12 is unique because it is the only nutrient in the human diet that must come from animal products

Association between methylene tetrahydrofolate reductase polymorphisms and risk of ischemic stroke

Testing methods for identifying an MTHFR mutation include saliva tests and/or a DNA panel test (which may include a mouth swab, hair sample, or a blood test)

Now, being a water-soluble vitamin, high amounts of B12 are considered safe to take in supplements because your body will excrete whatever you dont need through your urine

[DOI] [PubMed] [Google Scholar] 59.Collins D.A., Hogenkamp H.P., OConnor M.K., Naylor S., Benson L.M., Hardyman T.J., Thorson L.M

Sobczyska-Malefora et al., 2021)