But G Fuel is so good that I pretty much pounded my 18 ounce shake. I could make a cup of coffee after that, but I don't know if I'd be overloading on caffeine at this point.
When examining the caffeine content of the most popular energy drinks, some beverages like G-Fuel, Rockstar Xdurance, Celsius Heat, and Bang contain a whopping 300 milligrams of caffeine per serving.