Fifteen years ago, pro bodybuilders everywhere began using the original Natural Sterol Complex as an alternative to anabolic steroids. Welcome to the twenty-first century's all new Natural Sterol Extreme. Natural Sterol Extreme takes the "time tested" original and ups the ante for big gains. You'll still find an optimized blend of performance aminos, EFAs, energy substrates, and powerful sterols. But now, you'll get more. The all-new "Extreme Stimulant Complex" has been engineered to help boost energy levels dramatically, sharpen workout focus, preserve lean mass, and enhance thermogenesis. Translation? Incredible energy and drive combined with super "cuts" for maximum definition. The all-new "Optimized Phyto Complex" contains select herbs designed to shed excess subcutaneous water weight, detoxify your liver, and provide additional workout energy. The proprietary "Substrate Complex" provides your hard-working body with performance substrates it needs to train longer, more intensely. But the real core of Natural Sterol Extreme lies in its "Sterol Extreme Complex". Universal Nutrition has now added some amazing (and patented) ingredients like 7-Methoxyisoflavone, Beta-Ecdysone (ecdysterone), Triboxybol, and Isoflavonol. These ingredients can exert powerful nutrition-partitioning effects, boost protein synthesis and nitrogen retention, stimulate hormone production, and prevent muscle catabolism.