Intravenous (IV) Vitamin C Therapy involves the administration of Vitamin C directly into the bloodstream. This delivery system is very powerful because it allows the plasma concentration of Vitamin C to reach levels high enough to kill cancer cells.
Vitamin C at high blood concentrations does not work as an anti-oxidant but instead acts as a pro-oxidant. When given intravenously, Vitamin C in the blood has been shown to generate the production of hydrogen peroxide that directly kills cancer cells in the early stages of cancer.
Normal cells have the ability to neutralize the effects of hydrogen peroxide via catalase whereas cancer cells do not. This mechanism of action is similar to some conventional chemotherapies, but without the toxic side-effects.