A B12 shot is usually given in the upper arm or hip
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You may feel unsteady in the dark, on uneven ground, or when stepping off a curb
But to ensure that you are not wasting your money at the very least, or endangering your body at worst, lets examine the efficacy of vitamin B-12 injections for weight loss
It is not a drug, dietary supplement, food additive, cosmetic, or therapeutic agent, and must not be used in or on humans or animals
Subcutaneous injections are also very effective, but just a bit slower entering the bloodstream than intravenous and intramuscular