Vitamins are nutrients that are found in the foods we eat. They’re needed for functions such as growth, metabolism, and nervous system activities. Share on Pinterest Anna Denisova/Getty Images Often, ...

A prolonged vitamin C deficiency can cause severe and potentially life threatening symptoms. Eating a variety of fruits and vegetables can help maintain optimal levels of this important nutrient.

Vitamin intravenous (IV) therapy infuses vitamins directly into the bloodstream. It can also offer the body some extra hydration. While many people take vitamins and supplements each day or on a ...