B12 Shots Side Effects And How To Treat Them What are the possible side effects of a vitamin B12 (cobalamin) injection? 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 Are Vitamin B12 Injections Safe? Benefits, Risks & What to Know B12 Injection Side Effects Consensus Academic Search Engine How Long Does a Vitamin B12 Injection Last? Skin Benefits & More