Vitamin B12 is typically well-tolerated, but in very rare cases, there are serious side effects to be aware of. Learn more about them here.

Vitamin B12 overdose is so rare that serious adverse effects from consuming large amounts of vitamin B12 have only been reported in a handful of studies in the medical literature. It’s effectively ...

Eating eggs can help you meet your daily B12 needs, but several foods provide significantly more vitamin B12 per serving.

B vitamins are essential nutrients that help your body function at its best. But these nutrients may irritate your skin leading to rashes, hives, or other symptoms especially if you take too much.