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Vitamin B12 injections deliver a concentrated dose of the essential vitamin directly into your bloodstream
A deficiency can lead to a form of anemia that causes fatigue
Am J Prev Med
Vitamin D3 is paramount for a healthy immune system, as well as bone and nerve health
People who were running low on B12 often say they feel less drained within the first several days, which makes it easier to stay active and stick with a routine
Injecting B12 into fat means placing the vitamin into the subcutaneous layer, the soft fatty tissue that sits between your skin and your muscle
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