Amino NRG is a unique form of amino acid energy preworkout shake from THE PROTEIN WORKS™, highly regarded for its cutting-edge amino energy enhancer and ultra pure formation. Amino-NRG has been designed to help dramatically increase your energy, work output, strength, speed, recovery and muscle building potential. Taken pre-workout, intra workout or post workout, Amino-NRG contains not only the purest amino acids. Higher concentration per serving than any other amino energy but also includes caffeine green tea extract, Glutamine and Citrulline Malate. All working together to improve work output during intensive workouts. Click on the Product for full information for your absolute peace of mind.