vitamin b12 injection fda Instructions for Vitamin B12 Injection – Prescription
Description
Genetic variants related to the immune system and autoimmune diseases increases the risk of pernicious anemia

Furthermore, Vitamin B12 plays a large role in improving brain function

This intransigence is especially puzzling given that B12 injections are not toxic at any level, which assertion no respectable medical source contradicts

Hosono K, Endo H, Takahashi H, et al

Frequency depends on your baseline, goals, and response
