where can you inject b12 How to self-inject intramuscular vitamin - Overview B12 Injection Dosage and Frequency:

[37] The MMACHC gene product is characterised as a cyanocobalamin reductase (cyanide-eliminating) and an alkylcobalamin reductase

The best first step is to check with your insurance provider directly

Conclusion: Optimizing Your B12 Therapy Getting the right B12 therapy is key for adults wanting to fix deficiencies or keep their health up

And since having too much B12 isnt harmful (the body simply excretes the excess), its easier and cheaper to just get a shot (B12 injectables cost $14 apiece if bought online or $20 to $70 at a spa or doctors office)

However, it can be added to some food products and is available as an injection or oral supplement