vitamin b12 injections folic acid and Intramuscular bowel surgery Perspective: The High-Folate–Low-Vitamin B-12 Interaction
Description
Seek Care When Needed Severe symptoms, chest pain, shortness of breath, fainting, allergic reactions, neurologic symptoms, or acute illness require medical care

Appetite suppression: Unlike some fat loss peptides (GLP-1 agonists, for example), AOD 9604 doesn't suppress appetite

There is one risk that has nothing to do with the needle

And you dont have to worry about getting too much because its been reported that there are no reports of adverse effects associated with excess B12 intakebut thats not true
