That number would increase significantly if you take into consideration that people in the US are only declared deficient if their B12 levels drop below 200 pg/ml (145pM)
[iii] Sasse, P., Malan, D., Fleischmann, B
This randomized clinical trial demonstrates that vitamin B12 supplementation, alone or with folic acid, significantly improves blood sugar control and insulin resistance in patients with type 2 diabetes.
No headaches, no weird energy spikes, nothing unusual at the injection site beyond a tiny pinch
Freezing and Thawing Freezing : Freeze the aliquots quickly by placing them in an ethanol/dry ice bath or a specialized freezer rack to avoid degradation
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