Vitamin B12 Injections: Dosage and Frequency Guide Instructions for B12 Injection Alan Health Animal NDC 57319 502 05 Vitamin B12 1000 Mcg Cyanocobalamin B12 Shots at Home: How, Where & How Often to Inject Yourself AZ IV Medics Vitamin B12 injections, now available at The Foot Health Practice 01226293693! Vitamin B12 deficiency is a growing problem in the UK, with 10% of people aged 75 and over affected. Vegetarians B12 hormone injection ampoules in selective focus. Ampoules and syringes containing solution for injection used for vitamin B12 supplementation Stock Photo Alamy