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An overdose of vitamin B12 through diet is hardly possible and also not known, since the required transport protein IF (intrinsic factor) and absorption via the intestinal mucosa are two major barriers
If youve tried B12 supplements and didnt notice much improvement, injections might be a better fit
Who Should Think About Getting B12 Shots To Lose Weight
this compound remains investigational
However, every treatment has some downsides
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