Filled with five grams of L-arginine per serving as well as essential vitamins*, this delicious berry-flavored sports drink is perfect for those who lead an active lifestyle and are looking for an extra boost of energy. *Vitamin B6 contributes to the normal functioning of the nervous system and normal protein metabolism. Vitamin B12 contributes to normal psychic function and normal formation of red blood cells. Vitamin C contributes to the normal functioning of the immune system and reducing fatigue and fatigue.