Vitamin B12 for Injection Cyanocobalamin 1,000 mcg, 25 Box (Rx) Mountainside Medical Cyanocobalamin vs. Methylcobalamin: What's the difference? Both are forms of vitamin B12, essential for energy, brain health, and red blood cell production. But here's the key: Cyanocobalamin is synthetic and needs Cyanocobalamin Vitamin B12 for Injection 1000 mcg ml 100 ml Bottle. 1Family 1Health Pharmacy MIC+B12 Energy + Mood Eden