B12 Shots for Weight Loss: What You Need to Know ISSA How to Administer an Intramuscular Injection at Home Vitamin B12 Injection Needle Size 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 Not all shots are the same here's a guide Injections are a fast, effective way to deliver medications, nutrients, and vaccines directly into the bodybut not all injections are the Self injecting vitamin B12. Quick and painless jabs after a B12 by Dr Caroline Palmer Medium