


Over the past few years, I have had disabling pain in my feet diagnosed as non-diabetic neuropathy. Years ago, I started taking a vitamin B12 supplement. High-Dose Supplement Led to Excess Vitamin B12: In any case, the physician must do a complete diagnostic workup to track down the reason for elevated vitamin B12 levels. Some people with high vitamin B12 levels are at greater risk for liver or pancreatic cancer ( Cancer Epidemiology, Biomarkers & Prevention, April 2019). Another possible cause of elevated vitamin B12 levels is a blood disorder ( QJM, June 2013). Your doctor will probably run blood tests to rule out problems with the liver or kidneys. Healthcare providers might prescribe such a high dose to correct a deficiency, but it is too much to take without medical supervision. First, check your multivitamin to make sure that the dose of vitamin B12 (cobalamin) is under 1,000 mcg (aka 1 mg). Where could excess vitamin B12 come from? Also, what problems could arise from this? I will have to consult with my doctor, but I’d like to know what questions to ask.Ī.

I had a blood test recently that revealed excess vitamin B12.Īlthough I take a daily multivitamin, I do not take a B12 supplement. You have written often about vitamin B12 deficiency, but I can find nothing about too much B12. What Might High Vitamin B12 Levels Signal? Deficiency is more common than excess vitamin B12, but both are worrisome. Many people do not get their vitamin B12 levels measured and may not realize they are either too low or too high in this essential nutrient. That includes certain antibiotics and powerful acid-suppressing drugs as well as the oral diabetes medication metformin. A surprising number of medications can deplete the body of vitamin B12. This nutrient is also key to neurotransmitters like dopamine, norepinephrine and norepinephrine.
#VITAMIN B12 SIDE EFFECTS FULL#
Myelin, the fatty sheath that surrounds neurons, depends on vitamin B12 for full functionality. It is essential for the development of red blood cells. Vitamin B12 (cobalamin) wasn’t fully described until 1956.
