Mix up ON AMIN.O. ENERGY anytime you want a fruit flavored boost of energy and alertness. You can determine what’s appropriate for any situation by adding 2 scoops of serving to 300-350ml water for an afternoon pick-me-up or increasing the amino acid matrix to 10 grams with a 4 scoop serving as a 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. In fact, ON’s 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.