where to give a b12 injection Injections at Home - Safety Guide for Self-Administration Best Vitamin B12 Injection Site:

Yes, in fact, vitamin B12 exists in four chemical forms that are very similar

Injecting in the wrong area can cause an abscess to form under the skin To avoid this only inject in the area recommended by your nurse or doctor

The skin may be stretched or pinched to facilitate easier insertion, depending on the site and muscle mass

Important safety information Risk of introduction of bacteria under the skin during the injection It is therefore important that you wash your hands and avoid touching the sterile parts of the needle and syringe during the injection

The numbers below come from two places: rodent studies scaled to a human size (allometric scaling) and several years of research community use reports