how painful are b12 injections at Home - Safety Guide for Self-Administration Best Vitamin B12 Injection Sites:
Description
CCL11 enhances excitotoxic neuronal death by producing reactive oxygen species in microglia

A deficiency can disrupt nerve signals, leading to symptoms like tingling, numbness, and cognitive issues like "brain fog." Furthermore, B12 is indispensable for DNA synthesis and supports metabolism by helping convert food into usable energy

As a result, blood tests may show normal B12 levels, even though the body is not receiving the active form it needs

TTP, Thrombotic Thrombocytopenic Purpura

If you do have to inject yourself, or have a family member inject you, find out the best places to do the injecting

K., Zampeli, V
