Vitamin B12 Injection LADRU 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. Cyanocobalamin vs Hydroxocobalamin (Vitamin B12 forms) Key Clinical Differences Hydroxocobalamin is preferred in: Pernicious anemia Severe vitamin B12 deficiency Neurological symptoms (subacute combined degeneration, neuropathy) Cyanocobalamin is Cyanocobalamin (B12) Products American Regent At Home Vitamin B12 4 Week Injection Package MUST BE A FLORIDA RESID CardioMender, MD Understanding The Benefits of B12 Shots for Weight Loss