b12 injection uses Vitamin shot Vitamin B12 Injections | B12
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and Ramsay, M.R

The water-soluble vitamin injection is effective and has no adverse side effects

doi:10.1016/j.bcp.2018.05.003 Neelakantan H, Brightwell CR, Graber TG, et al

What is Vitamin B12 Deficiency

"I recall there was one slide in my class that said you treat B12 deficiency with a pill or an injection
