Lycopene is a natural pigment contained in the ripe fruit of tomatoes. It is one of the strongest antioxidants in nature. Singlet oxygen and oxygen free radicals in the human body are the chief culprit in the body's own immune system. Lycopene scavenges free radicals far more than other carotenoids and vitamin E, and its quenching singlet oxygen rate constant is 100 times that of vitamin E.