Cyanocobalamin (B12) Injection Wells Pharmacy Network Vitamin B 12 Cyanocobalamin Injection 1000 mcg mL Med Plus Physician Supplies Cyanocobalamin INJ 1000mcg Cobal, Cyanoject, Vitamin B 12 Dosage, Side Effects & Drug Information CVS Pharmacy Cyanocobalamin Injection Physical Form: Liquid Physical Form: Liquid at Best Price in Vadodara Ocean Pharmaceutical Vitamin B 12 Cyanocobalamin 1,000 mcg mL Intramuscular or Subcutaneous Injection Multiple Dose Vial 30 mL Cyanocobalamin is the preferred supplemental form of vitamin B 12 as there is insufficient evidence to support the efficacy of the other forms like methylcobalamin. Michael Greger MD, How Not to Die.