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In many cases, B12 shots are available by prescription only
Before giving yourself a B12 injection, ensure you have all the necessary supplies: a B12 vial, an alcohol swab, a syringe and needle, and a sharps disposal container
Intramuscular injections are administered into the muscles
Philp D et al
The faster you push the plunger, the more pressure builds in the tissue, and the more it hurts
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