Vitamin B12 Dosage: What Is the Proper Daily Amount? Dr. Axe Cyanocobalamin (B12) Injection 1000 mcg mL, Multiple Dose Vial 30 mL McGuff Comment b12 to get free ebooks. Vitamin B12 Injection Complete Dosage Guide, 1 Forms of B12 Used for Injection:, Methylcobalamin Active, brain + nerve repair form (best for long term use)., B12 Shots at Home: How, Where & How Often to Inject Yourself AZ IV Medics Oral vs. Intramuscular Vitamin B12 in Vitamin B12 Deficiency The Blood Project Cobalamin (vitamin B12) and Folate Deficiency Province of British Columbia