b12 injection video How To Self-Inject How To Do Vitamin B12
Description
Insert the needle into the vial of bacteriostatic water and push the 1 mL of air into the vial

Yes, but separate applications
Clinic visit: B12 injections can only be given by a doctor or nurse, which requires a clinic visit

A single-center, double-blinded, randomized controlled study to evaluate the relative efficacy of sublingual and oral vitamin B-complex administration in reducing total serum homocysteine levels
