B12 Injection sites + How to use B12 Shots Safely How To Give A Subcutaneous Injection And Sites The HCG Institute How to Use These 4 IM Injection Spots Safely 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 body but not all injections are the same. Subcutaneous Injection Sites and Instructions for Safe Self Administration