does a b12 injection make you tired Feeling tired, foggy, or run-down? It could be Vitamin B12 Side Effects
Description
When theres a vitamin B12 deficiency, individuals might experience mood fluctuations and difficulties in focusing
Most report only a slight pinch
Mild dizziness or lightheadedness, especially if youre sensitive to injections or havent had one in a while

Sigalos, John T, and Alexander W Pastuszak