b12 injection site lump Best Vitamin Site: Administering B12 Shots Managing Vaccine Injection Site Reactions:
Description
Am J Clin Nutr 1994;60:2-11

They could interact with other medicines or health issues

This is uncommon, but it is a reason to address a deficiency before it progresses

TCN2 functions as a chaperone for FTY720 and sphingosine, whose complex induces astrocytic CD320 internalization, suggesting a delivery mechanism of FTY720/sphingosine via the TCN2-CD320 pathway

Without enough vitamin B12, the body may struggle to produce healthy red blood cells and maintain normal nerve function
