what is vitamin b12 injection used for Injections: Benefits and Risks Vitamin B12 Injection: Benefits and

It affects many bodily functions

This distinction matters not because B12 injections are inherently dangerous, but because the systems surrounding the injection determine how quickly and effectively a provider can respond if something unexpected occurs

You always need a prescription from a doctor based in your country

History [edit] Descriptions of deficiency effects [edit] Between 1849 and 1887, Thomas Addison described a case of pernicious anemia, William Osler and William Gardner first described a case of neuropathy, Hayem described large red cells in the peripheral blood in this condition, which he called "giant blood corpuscles" (now called macrocytes), Paul Ehrlich identified megaloblasts in the bone marrow, and Ludwig Lichtheim described a case of myelopathy