Lycopene is an organic compound classified as a tetraterpene and a carotene. It is a bright red carotenoid hydrocarbon found in tomatoes and other red fruits and vegetables. Lycopene is a symmetrical tetraterpene that consists entirely of carbon and hydrogen and is derived from eight isoprene subunits. It is insoluble in water and has 11 conjugated double bonds that give it its deep red color. Lycopene is a powerful antioxidant that might help protect cells from damage. It is found in tomato, watermelon, red orange, pink grapefruit, apricot, rose hip, and guava. Lycopene is used for high blood pressure, high cholesterol, cancer, and many other conditions, but there is no good scientific evidence to support most of these uses. However, taking lycopene by mouth might slightly reduce the risk of developing prostate cancer and reduce the risk of prostate cancer returning. Lycopene is considered safe and there are no established upper limits recommended for its consumption. It is commonly consumed in certain fruits and vegetables, and doses of 15-45 mg daily have been safely used for up to 6 months when taken in supplements.