Choosing the Right Needle and Syringe for B12 Injections: A Complete Guide 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 Where to Inject Vitamin B12 B12 vitamin Store A Retired RN About Vitamin B12 Injections B12 vitamin Store How to Perform a Subcutaneous Injection of Vitamin B12 How to Use These 4 IM Injection Spots Safely