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doi: 10.3945/ajcn.110.003483
Chen D, Wang Y, Wu K, Wang X
The doctor will carefully evaluate the benefits and potential risks before recommending its use
Factors That Affect How Quickly B12 Injections Work Several key factors influence how fast youll notice results from B12 injections: Severity of deficiency: Those with severe B12 depletion may require more frequent injections before experiencing full benefits
Myelin sheath integrity critical for nerve signal transmission is partially B12-dependent
Dietary supplements containing only vitamin B12 contain higher doses, such as 500 mcg to 1,000 mcg of vitamin B12
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