CYANOCOBALAMIN INJECTION, USP 30000 mcg 30 mL (1000 mcg mL) 30 mL VIAL How to Give a B12 Injection: Step By Step Instructions Subcutaneous Injection: What It Is and How to Give One Understanding the 4 main types of injections makes medical knowledge simple and clear. Intramuscular, Subcutaneous, Intradermal & Intravenous each one plays a different role in treatment. Stay informed, stay safe! Vitamin B12 Injection: Energy Boost and Anemia Treatment Mountainside Medical How to Administer an Intramuscular Injection at Home