5-hour ENERGY® | 9,701 followers on LinkedIn. Turns out caffeine can be packed with flavor. 5-hour ENERGY® delivers tasty caffeine in 17 flavors. | Since launching in 2004, the 5-hour ENERGY® brand and its iconic 2-fl oz. shot has become a household staple for its ability to help you feel alert and get you through whatever each day brings. Find more information about 5-hour ENERGY® products, which are widely available in convenience, grocery, retail, club stores, and online outlets, at 5hourENERGY.com.