Can Excess Vitamin B12 Cause Nerve Pain?
Yes — in rare cases, taking too much vitamin B12 can cause nerve hypersensitivity and worsen symptoms like tingling or burning. However, nerve pain is far more commonly caused by B12 deficiency, not excess. Evidence-Based Guide · Updated 2026 Can Too Much Vitamin B12 Cause Nerve Pain? The paradox most supplement labels never explain — … Read more