When you consume a vitamin orally, whether it be over the counter or prescription, not everything is absorbed. What is absorbed by the stomach is taken directly to the liver where it may be metabolised. This results in only a fraction of what you consumed orally remaining into the bloodstream to be utilised as fuel and nourishes your body.
On the other hand, through IV Drips, 100% of the vitamins are delivered into your bloodstream bypassing the metabolism process. This results in the ability to get more vitamins, minerals, antioxidants, and amino acids to support your body to function at its best.