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

If you're considering a vitamin B12 supplement because of certain dietary restrictions, medical conditions or your age, this ...

B12 shots will benefit only those with a B12 deficiency and people with some underlying conditions. No research indicates that B12 shots will help with weight loss or benefit healthy individuals. B12 ...