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 ...

Although some people claim vitamin B12 shots can help with weight loss, experts do not recommend them. They can cause side effects and, in some cases, allergic reactions. According to a 2019 study, ...