Living a busy and full life can leave you needing a trusted partner to help you meet the everyday demands of life, work and training. The World’s No.1 Sports Nutrition brand Optimum Nutrition now brings you ESSENTIAL AMIN.O. ENERGY® + Electrolytes in a convenient ready-to-drink format to give you a refreshing boost to support your on the go active lifestyle. With zero sugars, low calories, 3.1 g of Amino Acids, and 100 mg of Caffeine from natural sources, it’s a better for you solution to support your energy, anytime. Magnesium contributes to normal energy-yielding metabolism and normal electrolyte balance * Caffeine contributes to increased alertness and improved concentration INGREDIENTS: Water, Branched Chain Amino Acids (L-Leucine, L-Isoleucine, L-Valine), Carbon Dioxide, Acid (Citric Acid), Magnesium Lactate, Taurine, Flavourings, Acidity Regulator (Potassium Citrates), Black Carrot Concentrate, Beta-Alanine, L-Citrulline, L-Glutamine, L-Arginine, L-Tyrosine, Natural Caffeine, Sweeteners (Sucralose, Acesulfame K), Green Tea Extract (Camellia sinensis, leaf). NOTE: TO BE USED IN THE FRAMEWORK OF A VARIED AND BALANCED DIET AND A HEALTHY LIFESTYLE. High in caffeine (40 mg / 100 ml). Not recommended for children or pregnant or breast-feeding women.