B 12 Intramuscular vs. Subcutaneous Injection How to Administer an Intramuscular Injection at Home Types of injections explained! Understanding the angles: intramuscular (im) : injects deep into the muscle at 90. subcutaneous (sc) : goes under the skin at 45. intravenous (iv) : B12 vitamin Store A Manual for you all: What are B12 injections? Where to give B12 injections shots? How to give B12 injections? 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