can b12 injections be given at home injection make you sick Vitamin B12 – Philadelphia Medical Group Private Vitamin B12 Injection Service
Description
Others wait months with zero visible change

Thats how I felt about the B12 shot. Humans arent the only ones getting their fix
Symptoms of Low Vitamin B12 Levels You can tell if your vitamin B12 levels start to taper off or become low if you start feeling any of the following symptoms

The human body needs vitamin B12 to make red blood cells, nerves, DNA and to carry out many essential functions

Cao H, Gerhold K, Mayers JR, Wiest MM, Watkins SM, Hotamisligil GS

The studies were done on rodents, the b12 isnt available in the kidneys for very long, weeks, not months it seems.and whether humans with b12 deficiency because of a broken system can access this b12 we wont know without further research
