Is intramuscular (IM) administration of vitamin B12 injections preferred over subcutaneous (SC) administration? What Happens If You Inject B12 Into Fat? PA Relief How to Give a B12 Injection: Step By Step Instructions Common Injections Cheat Sheet Save for Ward Rounds! Insulin Diabetes Subcut 0.51 unit kg Vitamin B12 Deficiency Neuropathy IM 1001000 mcg Tetanus Toxoid 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. Vitamin B12 Injection Dose for Adults: 7 Essential Dosage Facts & Schedules Liv Hospital