b12 injections im or sq injection subcutaneous vs.intramuscular b12 Subcutaneous (SC) and Intramuscular (IM) Injections– Cyanocobalamin (b12) Injection 2,000 mcg/mL
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Many researchers use both as part of their hair growth stack

doi: 10.5301/ijbm.5000311 14 HahYSChoHYJoSYParkYSHeoEPYoonTJ

M., & Procyte, A

To make these side effects less, doctors might change how they give the shot or where they give it

G., Akolu, H
