Mix up Essential Amino Energy anytime you want a fruit-flavored or coffeehouse-inspired boost of energy and alertness. Add a 2-scoop serving to water for an afternoon pick-me-up, or increase 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 one of the few sports nutrition companies that owns and operates its own production facilities. While On is one of the world's largest producers of sports nutrition products, it remains focused on being recognized as the best. Its raw material standards are so strict that Quality Assurance Technicians may reject entire truckloads that do not meet them. On takes pride and care in crafting its award-winning supplements, just as consumers do in achieving their fitness accomplishments.