Flavor:Strawberry Banana Smooth. Fruity, banana-y? With so many ways to describe what Strawberry Banana flavored Extra Strength 5-hour ENERGY shots are, we can only think they're delicious. And with four calories and zero sugar, what's not to love? Strawberry Banana flavored Extra Strength 5-hour ENERGY shots are easily stored in most gym bags, purses, desk drawers or…. anywhere. For an unbeatable combination of nutrients, B vitamins and caffeine, try a Strawberry Banana flavored Extra Strength 5-hour ENERGY shot today.