You cannot overdose on vitamin B12 because it is a water-soluble vitamin, so any excess is excreted through urine.

Symptoms of taking too much vitamin B12 have been reported in very limited situations, but most experts report that the supplement is safe even at high doses. For this reason, the U.S. Food and Drug ...

A vitamin B12 deficiency can cause cognitive issues, muscle weakness and other problems. Here's how to make sure you're ...

Vitamin B12 (cobalamin) is one of the most popular supplements. But can having a little too vitamin B12 in your body really do any harm? For starters, according to the National Institutes of Health ...