― It can take a lot of energy to get through the day. You've got a to-do list that's a mile long, places to go, people to see, and deadlines to meet. You'll find yourself running low on energy by noon, if you're not careful. You might need something to help get you through the day so you can do what you need to do. ∙ 5-hour Energy is a liquid energy "shot," that contains a blend of B-vitamins, amino acids, and nutrients. ∙ A few 5-hour facts:Contains about as much caffeine as a cup [...].