Longevity & Weight Loss Peptide Therapy Des Moines Area Iowa IV How To Give B12 Injection + Benefits Subcutaneous vitamin B12 administration using a portable infusion pump in cobalamin related remethylation disorders: a gentle and easy to use alternative to intramuscular injections Orphanet Journal of Rare Diseases Springer Nature Vitamin B12 Injection IV or IM B12 Shots vs. IV Infusions: What is the difference? Integrative Medicine, Laser and Aesthetics Subcutaneous (SC) and Intramuscular (IM) Injections Must Knows for Subcutaneous administration: Pinch skin with non dominant hand and hold syringe with dominant hand Always inject: 2 inches away from umbilicus (for abdomen) 3 inches