Optimum Nutrition (ON) Amino Energy is a pre-workout supplement designed to provide energy and support muscle recovery. It contains essential amino acids, BCAAs, green tea extract, and green coffee extract. This keto-friendly powder has 0 grams of sugar and is available in a tasty Concord Grape flavor. Each serving delivers 100 mg of caffeine from natural sources, making it suitable for anytime energy and focus. The product is easy to mix and consume, making it a convenient option for those looking to enhance their workout performance and recovery.