can b12 injections be harmful Feeling worse after Injection: Answering concerns Why Do You Need B12

Esposito G, Dottori L, Pivetta G, et al

If youve been diagnosed with a B12 deficiency, received a B12 shot (or a course of them), and your B12 levels are now within the normal range, but your fatigue persists, its a strong indication that your tiredness is likely due to something else

Having megaloblastic anemia can make you more at risk of suffering from osteoporosis, problems with your vision, struggle with memory, worsened cognitive functioning, and if you were to become pregnant, it increases the risk of birth defects in the fetus

Summary Vaccine injection site reactions are common, but understanding their symptoms, types, and treatment options helps ensure a smoother vaccination experience

Vitamin B12 is a water-soluble vitamin that maintains nerve and brain health, while also aiding in red blood cell production (via Healthline)