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They are administered under medical supervision from a licensed healthcare provider
If left untreated, this can lead to symptoms such as fatigue, weakness, and neurological concerns
doi:10.1016/j.bcp.2018.05.003 Neelakantan H, Brightwell CR, Graber TG, et al
Vitamin injections Vitamin B12 2000 mcg 2 ml Vitamin B12 is a water-soluble vitamin that plays a vital role in brain function and the production of DNA and red blood cells
Also tell them if you smoke, drink alcohol, or use illegal drugs
They are generally safe and work well for those who are deficient
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