VITAMIN B12 INJECTION 1000 mcg mL CYANOCOBALAMIN INJECTION, USP 30000 mcg 30 mL (1000 mcg mL) 30 mL VIAL Vitamin B12 Injection Sioux Falls, SD Vital Flow Infusions CYANOCOBALAMIN INJECTION, USP 30000 mcg 30 mL (1000 mcg mL) 30 mL VIAL Vitamin B12 Injection Manufacturer AdvaCare Pharma Vitamin B12 injections deliver high doses of this essential vitamin directly into your bloodstream for better absorption than oral supplements to boost energy, support red blood cell production and maintain nerve function.