Vitamin B1, or thiamine, supports normal cell function and helps your body convert food into energy. Thiamine overdose symptoms are unlikely to occur because this vitamin will be excreted in urine ...

Taking too much vitamin B6 can cause nerve damage and numbness in hands and feet. Niacin at high doses can cause flushing and ...

Dietary supplements are products like vitamins, minerals, and herbs that claim to promote wellness. Many of these supplements do have known benefits, but there are also risks you should know about.