Vitamin B12 Deficiency: Causes, Symptoms, and Treatment

a muscle. Your doctor or nurse may give you the shots or show you how to take them yourself. Side effects are usually minor, but if your ankles start to swell or you have an allergic reaction or trouble breathing, call your doctor.

If your B12 levels are already normal, getting a B12 injection for extra energy or weight loss isn’t going to help. No continue reading …