selfadministered vitamin b12 injections at Home - Safety Guide for Self-Administration Ivy Grove Surgery : Self-administration
Description
Personal supervision, which means a physician must be in attendance in the room during the performance of the procedure

Should you get blood work done before getting a B12 injection

Because of that, B12 is often called the energy vitamin

10.1038/ng.294 45 Sanz-CuestaT.Escortell-MayorE.Cura-GonzalezI.Martin-FernandezJ.Riesgo-FuertesR.Garrido-ElustondoS.et al (2020)
