possible side effects of b12 injections Vitamin B12: Overdose and Are B12 Injections Safe? Side
Description
In older people, there may not be sufficient stomach acid to start the breakdown process

In deficiency, the body makes abnormally large, inefficient cells (megaloblastic anemia)
Not fit for human or veterinary consumption.

Its also vital for the production of red blood cells, which transport oxygen throughout the body
