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Vitamin B12 side effects Side effects from vitamin B12 supplementation are rare, and only occur with B12 injections, not oral supplementation, Allen says
Injection site reactions are typical of any subcutaneous peptide
The plan will be customized according to your health status
Disclaimer: This article is for informational and educational purposes
It results from the bodys inability to absorb vitamin B12 properly, which is vital for producing red blood cells and maintaining healthy nerve cells
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