Mix up ESSENTIAL AMIN.O. ENERGYTM anytime you want a fruit flavored or coffeehouse inspired boost of energy and alertness. You can determine what’s appropriate for any situation, adding a 2-scoop serving to water for an afternoon pick-me-up or increasing the amino acid matrix to 10 grams with a 4-scoop pre-workout drink that delivers 200 mg of caffeine from green coffee and green tea extracts.optimum Nutrition is proud to know that they are one of the few sports nutrition companies who own and operate their own production facilities. While it’s true that ON is one of the world’s largest producers of sports nutrition products, they remain focused on being recognized as the best. In fact, their requirements for raw materials are so strenuous that it’s not unusual for ON Quality Assurance Technicians to reject entire truckloads of raw materials that do not meet their high standards. They like to think that we take as much pride & care in crafting their award-winning supplements as our consumers do with crafting their physiques and fitness accomplishments.