Medically reviewed by Jamie Johnson, RDN Key Takeaways Taking too much vitamin B6 can cause nerve damage and numbness in hands and feet.Niacin at high doses can cause flushing and, in extreme cases, ...

If you are taking the over-the-counter product to self-treat, follow all directions on the product package before taking this medication. If you have any questions, consult your pharmacist. If your ...

Eight different vitamins make up the B complex, and they all play crucial roles in the body, such as producing energy, keeping our nervous system healthy, and supporting cell development. If eight ...

In recent weeks, reports have been circulating about severe reactions in people who’ve taken over-the-counter vitamin B6 supplements. Vitamin B6 poisoning can injure nerves and lead to symptoms ...