People who try new drugs and supplements which have not yet received FDA approval, or who participate in clinical trials, may be among the first to receive the benefits of a miraculous new medicine. But they should also be aware that some of these substances may have harmful long-term effects which have not yet been discovered. There is some evidence that vitamin C or vitamin E supplements can slow down the course of AD over several years. No one should take these or any supplements without consulting a doctor first. A much safer way to consume anti-oxidants is as part of a healthy diet.
Caffeine is also an anti-oxidant.