Figure. Subcutaneous injection into the deltoid area The Australian Immunisation Handbook Needle Injection Techniques Every Nurse Should Know! Whether you're prepping for your NCLEX or brushing up on your skills, here's a quick breakdown of the most common injection routes you'll encounter Instruction Guide for Intramuscular (IM) Self injection of B12 Methylcobalamin 1mg 5mg Subcutaneous vs intramuscular what's the difference? #vitamintherapy #theb12store #injection CYANOCOBALAMIN INJECTION, USP 30000 mcg 30 mL (1000 mcg mL) 30 mL VIAL B12 vitamin Store Intramuscular vs Subcutaneous Injections for vitamin B12 supplements.