Vitamin B 12 Cyanocobalamin Injection 1000MCG mL 30 mL MDV Med Plus Physician Supplies Self injecting vitamin B12. Quick and painless jabs after a B12 by Dr Caroline Palmer Medium 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 Vitamin B12 3,000 MCG JRG Livestock & Pet Supply