Muscletech Amino Build Next Gen Energized contains many of the ingredients found in Amino Build Next Gen but with the addition of energising caffeine. BCAAs are a popular supplement in the bodybuilding industry. They consist of Leucine, Isoleucine & Valine. They are the primary building blocks for muscle & help to support muscle mass. They are delivered at the appropriate clinical dose. As well as an electrolyte complex to support hydration, it also contains Coconut Water & Watermelon Juice. Betaine has been added for its role in enhancing muscle endurance & help to support muscle build. For best results, consume two servings before & during workout.