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 B12 Injections at Olympia Vitamin B12 Recommendations: Updated Vegan Health B12 Shots at Home: How, Where & How Often to Inject Yourself AZ IV Medics Vitamin B12 Injection Dosage Duluth GA Vitamin B12 Monthly Injection Dose: Typical Dosages & Administration Methods Liv Hospital