5-hour ENERGY®, the original liquid energy shot, was introduced in 2004. Despite dozens of imitators, it is still number one – by a wide margin. Why? Because it works! Me-too energy shots try to fool you with sugar and herbal stimulants, but 5-hour ENERGY® shots give you a proven blend of B-vitamins, amino acids and essential nutrients to keep you going strong. It has zero sugar, zero herbal stimulants and four calories which means hours of energy now with no sugar crash later.