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The duration of vitamin B12 effectiveness depends on your health condition and the supplement type, and the severity of your deficiency
Commonly included in neurochemical signaling studies
It's a powerful combination
An explanation of how we came to these new recommendations can be found in Vitamin B12: Rationale for Recommendations
Human clinical data limited to case reports and small trials, not large controlled studies
So most patients find these results to be very long-lasting
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