vitamin b12 route of injection Store How to inject B12 in your arm B12(methylcobalamin) injection | PPTX

That direct route is the whole point, and its why a shot outperforms a pill for anyone with absorption challenges

[2] Hydroxocobalamin is administered via intramuscular or intravenous injection to treat and prevent vitamin B deficiency, particularly in conditions like pernicious anemia where oral B absorption is impaired

While these typically subside within a few days, you should always notify your doctor just in case, Wirtz says

Methylcobalamin is the naturally occurring, "active" form the body uses directly at the cellular level

A vitamin B12 deficiency affects energy levels and immune health and may cause neurological problems like numbness and tingling in your hands and feet