what happens if you have too much b12 injections Are Shots Safe? Royal Palm Beach Medical Group Feeling worse after B12 Injection:

Risk increases with poor injection hygiene, reuse of needles, or injection into non-sterile sites

But...a couple of initial thoughts

Vitamin B12 shots are a valuable tool for treating and preventing vitamin B12 deficiency, improving skin health, and promoting overall wellness

NNMT sits between NAD+ metabolism and one-carbon methylation metabolism, pathways that support redox reactions, DNA repair, and transcriptional regulation

Hemoglobin: The functional or optimal range for hemoglobin is 13.5 to 14.5 g/dL for women and 14 to 15 g/dL for men

It is a synthetic quinolinium small molecule studied as an inhibitor of nicotinamide N-methyltransferase