Symptom monitoring: Fatigue, numbness or cognitive problems should improve with treatment
Also, patients should be warned about the danger of taking folic acid in place of Vitamin B12, because the former may prevent anemia but allow progression of subacute combined degeneration
They are usually safe, but some people might have reactions
Last updated: March 9, 2026 If you are considering B12 injections this spring whether as part of a pre-summer wellness refresh or to address persistent fatigue understanding the risks is just as important as knowing the benefits
Even after the treatment I've had so far, my feet are swollen and still hurt when I walk, I have other lingering symptoms (trouble staying asleep, dizziness, fatigue, ringing ears, ...)