What does B12 do if you have too much?
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4 min read
According to the NIH Office of Dietary Supplements, no adverse effects have been associated with excess vitamin B12 intake from food and supplements in healthy individuals. So, what does B12 do if you have too much from megadoses or other causes? While often harmless, excessively high levels can sometimes lead to uncomfortable side effects or serve as a sign of an underlying health problem.
