is taking vitamin b12 nasally and by injection dangerous B12: Symptoms, Dosage & Toxicity Risks Mean Plasma Concentration time profile

Endogenous causes (medical conditions) When B12 is elevated without supplementation , it can indicate that the body is releasing stored B12 from damaged tissues, producing excess B12-binding proteins, or failing to clear B12 normally

Mar 2008;15(3):164-9

Can I continue my multivitamin or other supplements while on this injection

Manufacturer instructions and UK injection technique guidance (FIT UK) consistently indicate that small air bubbles in subcutaneous GLP-1 injections are not associated with serious adverse events such as air embolism

Worry About Infections Unsterilized needles are a problem in many areas