b12 injections benefits side effects How Quickly Does Shot Work? Does It Help to Lose Weight? Vitamin B12 Side Effects

It can be taken together with CoQ10 for energy, as it simplifies the conversion of the coenzyme with an antioxidant function into its active form to protect cells from damage

There are many conditions that benefit from B12 therapy

Its important to have a healthcare professional administer the injections or receive proper training if you plan to self-administer at home

So the practical takeaway is not oral is better or SC is better. It is: pick one route, follow the documented per-dose figure for the vial you have, and keep the route constant so that whatever you observe is not confounded by a mid-stream route change