Optimum Nutrition essential amino energy

Optimum Nutrition Essential Amino Energy is a low-calorie amino acid and stimulant supplement designed for energy and recovery. Each 2-scoop (9g) serving contains 5g of amino acids, 100mg of caffeine from natural sources (green tea/coffee), and 0-1g of sugar. It provides 5-10 calories per serving and is popular for pre-workout or anytime energy.