Because tolerability has not been quantified in humans, there is no evidence-based safe concentration or frequency to point to
Financial support and sponsorship This work was supported by NIH grant R01 AG057381, Ladiges, PI
When found early, the symptoms are generally able to be treated fairly easily with vitamin B12 replacement, typically by mouth, but sometimes through injections, she said
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References: Witschi A, Reddy S, Stofer B, Lauterburg BH
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