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Is there an upper limit for B12
It functions by preventing the reuptake of three key neurotransmitters: serotonin, dopamine, and norepinephrine
[11] If you do have pernicious anemia, then supplementation may not be the answer
Our Methylcobalamin B12 ampoules are single use vials
Williams, A.J., et al
I requested a test for intrinsic factor or pernicious anaemia but they insist the serum test is sufficient
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