Vitamin E and prostate cancer: is vitamin E succinate a superior chemopreventive agent?

There is convincing evidence that vitamin E succinate significantly reduces human prostate cancer growth in experimental models compared with alpha-tocopherol or tocopheryl acetate. Its intact delivery to cancer cells is questionable when administered orally; however, a study in transgenic mice showed a synergistic inhibitory effect of dietary vitamin E succinate, selenium, and lycopene on prostate cancer incidence. Clinical trials have yet to confirm this effect.