b12 injection is iv or im Vitamin Sites: All You Need to Know B12 Injections vs. IV Drips:
Description
Sharabi A, Cohen E, Sulkes J, Garty M (2003) Replacement therapy for vitamin B12 deficiency: comparison between the sublingual and oral route

Your surgeon can target the exact source of your pain rather than treating the symptoms

Vitamin B12 plays a role in promoting healthy cells in nails, hair, and skin

It helps maintain your nerves, red blood cells, and your myelin (the fatty covering surrounding your nerves)
