how to give a vitamin b12 injection in the arm Safe Guide at Home Vitamin C and B12 Injection
Description
[1] Those who cannot digest or absorb B12 as a result of inherited genetics or damage to the stomach and small intestine require more than can be absorbed from sublingual supplementation

Do I still need a vitamin B12 injection if I have not been diagnosed with deficiency

Deficiency vs
How Long Does a B12 Shot Last

They can disrupt sleep, increase anxiety, and stress the cardiovascular system

[DOI] [PubMed] [Google Scholar] 42.Giusti B., Saracini C., Bolli P., et al