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Who is most likely to have low B12 levels
The right choice can change based on history, medication interactions, side effects, budget, and availability
Zero Withholding Period
This accounts for the people in the research that found 98% of their injected vitamin B12 in their urine 48 hours after it was administered
[1] [2] Neurological protection: Prompt B12 replacement prevents irreversible neurological damage in deficiency states, including subacute combined degeneration of the spinal cord
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