Some of the most prominent soft drinks in the world are Coke, Pepsi, and Dr Pepper. These dark colas — and their diet versions — contain caffeine. However, caffeine-free versions exist for ...

Diet Coke has around 42mg of caffeine per 330ml can, according to Coca Cola. Drinking Diet Coke can actually make you thirstier than you were before. After just an hour you could feel like you ...