Vitamin C IV therapy works by allowing the body to receive very high quantities of vitamin C without needing to take it orally, which means that much more of the vitamin can be directly absorbed into the body. We all need sufficient levels of vitamin C to maintain proper health, and some individuals are able to absorb it more efficiently through their diet than others. There have also been shown to be many benefits in absorbing high quantities of vitamin C which are very difficult to get just by taking an oral supplement. Having vitamins be administered intravenously rather than orally allows for the benefits that the vitamin provides allows for the body to absorb the vitamins much faster and much more efficiently.