b12 injections are Methylcobalamin Injection (Vitamin B12) Vitamin B12 - Energy &
Description
this is not very common, but if it happens, sitting or lying down for a few minutes post-injection can help

It is formulated for severe neuropathic conditions and vitamin B12 deficiency

When taken orally, B12 binds to saliva and stomach acid, which can reduce its absorption in the body

Methylcobalamin is another non-prescription form popular in wellness settings, with more limited clinical evidence than hydroxocobalamin for treating true deficiency
