b12 injections in early pregnancy are safe during Do You Need a Prescription for B12 Injections? Vitamin B-12 Supplementation during Pregnancy
Description
Yes, many clients include B-Complex + Vitamin C injections as part of their ongoing health and wellbeing plan

71:368372 Miller, A., Korem, M., Almog, R., & Galboiz, Y

The extrapolation from animal models to human applications requires caution, as tissue regeneration processes may differ between species
I have also accessed other sites for my B12 injections, including, the upper arm (deltoid), thigh (vastus lateralis), and the buttocks (dorsogluteal)

Abbreviations : DN, diabetic neuropathy