How to self inject intramuscular vitamin B12 Overview Guy's and St Thomas' NHS Foundation Trust Benefits of B12 Injections for Optimal Health How to Give B12 Injections at Home to Yourself PA Relief What Happens If You Inject B12 Wrong: 6 Red Flags 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