If you notice signs of anaphylaxisswelling of your tongue, face, or throat, difficulty breathing, or difficulty swallowingafter getting a B12 injection, call 911 or head to the closest emergency room immediately
Rotate injection sites frequently (e.g., abdomen, thighs, upper arms) to prevent local irritation and lipohypertrophy
Blood pressure changes can also be a potential side effect
With IM injections, that means always choosing a spot within the upper outer thighyour inner thigh is too vascular
A consultation to discuss your medical history, as well as family medical history, is advised prior to receiving B12 injections
To Sum Up What happens if you inject B12 in the wrong place