Your healthcare provider will give this as an intramuscular (IM) injection of vitamin B12. Once levels have returned to ...
“Vitamin B12 is an essential water-soluble vitamin ... either through food, supplements or intramuscular injections.
Vitamin B12 oral medication. Vitamin B12 intramuscular injections (a shot that goes into your muscle). Vitamin B12 nasal gel. Vitamin B12 nasal spray.