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 What Happens If You Inject B12 Wrong: 6 Red Flags B12 vitamin Store Intramuscular vs Subcutaneous Injections for vitamin B12 supplements. Cyanocobalamin (b12) Injection 2,000 mcg mL 30mL Conquer Pharma Intrav My Store