what does a vitamin b12 injection do for you Curious about shots? B12 Shots: Benefits, Uses, Safety,
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R., Poli, R

Effects of methylcobalamin (vitamin B12) on in vitro cytokine production of peripheral blood mononuclear cells

B12 injections work by delivering a direct and concentrated dose of vitamin B12, typically in the form of hydroxocobalamin, into the bodys tissues, specifically the muscle (intramuscular)
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[DOI] [PubMed] [Google Scholar] 17.Carey GB
