what does b12 injections do Benefits of for Optimal Health Vitamin b12 Injection | CardioMender,
Description
it is not FDA-approved and not for human consumption

doi: 10.1038/oby.2006.309

[16] Although cyanocobalamin lacks a defined upper-toxicity threshold due to its water solubility and renal elimination, exceptionally high cumulative doses have been temporally associated with acneiform eruptions, altered potassium homeostasis, and theoretical thrombotic risk, emphasizing the importance of evidence-based dosing

If any of that rings true for you, sitting down with a provider is a sensible move

Standard dosing ranges from 0.25 mg to 0.5 mg daily via subcutaneous injection
