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Adhesive temperature indicators (the kind that change color above a threshold) provide a simple verification that the vial did not experience sustained heat during transport
Glycine and B12 may help reduce fatigue and enhance tolerability
That is a little different from: Getting B12 from foods like meat, fish, eggs, or dairy Taking B12 by mouth in a pill or liquid form Using sublingual B12 that dissolves under the tongue None of these options is always better for everyone
However, this pathway may not explain everything that was observed
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