Here, we aim to answer questions you may have about energy drinks and caffeine ... top of the caffeine list – Celcius Heat, Bang and Rockstar Xdurance, all with 300 mg of caffeine per can.

less energy hit, more relaxation. The company is rolling out a new line of hemp-infused drinks from its Rockstar Energy Drink brand. Rather than focusing on upping energy levels, the sugar-free ...

There are more energy drink brands out there than just Red Bull. We sampled some of the most popular brands before ranking ...