adverse effects of b12 injections Common & Rare Side Vitamin Vitamin B12 Injection: Uses, Benefits,

Minimal immunogenic potential: Long-term studies in rodents and primates report no antibody formation, suggesting a low risk of immune reactions following repeated exposure to the peptide

But why take vitamin B12 as an injection as opposed to other methods

Medications add another challenge

see Vitamin B12 Health Professional Fact Sheet

A Retired Registered Nurse about Vitamin B12 injections How to Inject Vitamin B My Experience with B12 Injections I recall years ago in nursing school when my lab supervisor asked me to give her routine insulin shot

The developing fetus relies entirely on maternal B12 stores, which are actively transported across the placenta