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The effects of a B12 shot can last from a few days to several months, depending on the shot and your body's needs
[1] For example, if a 2 mL dose (full 200 mg thiamine, 200 mg niacinamide) is to be given IV, a nurse might mix it into 50 mL of saline and infuse over 15-30 minutes
B12 injections give the vitamin directly to the body
We created this mini-guide to elaborate on each and every question asked by our readers
So glad I found a way to get these shots at home
The injection site should always be cleaned with an alcohol swab and allowed to dry before injecting
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