What this clearly shows is that to perform their vital roles, vitamins C and E work together. They have a synergistic effect that will not be gained just by intake of one or the other, and adequate levels of these nutrients is especially important for people who smoke.
We think that having an adequate supply of both vitamins E and C will help to decrease oxidative stress that is too low for us to measure and will then help to forestall the onset of chronic diseases. Taking vitamin E and vitamin C supplements will decrease oxidative stress.