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

What happens if your body has too much vitamin B12? Read on to find out the dangerous side effects of having excessive levels ...

Fact checked by Jennifer Klump If you're trying to figure out which supplements are actually worth it, or how to optimize ...

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

As pollution and fluctuating temperatures continue to challenge our immune systems, the common cold remains one of the most ...