Are Vitamin B12 booster shots worth it? Save Face 1 Box Vitamin B12 Methylcobalamin injectable shots.. Includes Syringes and F VIAVQ VITAMIN Intramuscular injection is shown at 90 because the goal is to reach the muscle, the deepest layer in this comparison. That route is chosen when medication needs reliable absorption through the muscle's Methylcobalamin B12 Injection 2500mcg Vitamin B12 Injection IM Injections Revive at The Group Med Spa How to Give Yourself a Subcutaneous Injection: An Introduction