Whether you're already a fan of Optimum Nutrition's Amino Energy in powdered form or are completely new to the product, you're going to love its new look! Optimum Nutrition Amino Energy + Electrolytes RTD is the same Amino Energy you love, put together in the convenient on-the-go form of an RTD. Plus, this Optimum Nutrition Amino Energy contains 100mg of caffeine to get you energized, and electrolytes to keep you hydrated during your longest days or workouts! And with 5 grams of amino acids, Amino Energy RTDs are a quick and simple pre-workout or intra-workout solution for optimal muscle recovery