One way it does that is by supporting T cells and natural killer cells, white blood cell types that help phagocytic cells like macrophages to attack foreign invaders and protect you from infection. 3
In this article youll learn why supplements and injections raise B12 and why that is harmless, how B12 travels in the blood and why a total number can mislead, what an unexplained elevation can point to, what functional deficiency means despite a high result, what a doctor does next, and when to seek advice
A Vitamin B12 shot is administered intramuscularly (into the muscle), usually in the upper arm or thigh
At your request, we can send your primary care provider information about your visit
This article is for general educational purposes and is not a substitute for an in-person medical evaluation, diagnosis, or treatment
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