In the U.S. you can't get Mountain Dew without caffeine I don't think :-) We don't have any of those naming rules about caffeine. Usually root beer doesn't have caffeine so I'll alternate drinking that if its after about 2:00 p.m. where i can get it as I like it almost as well as Coke/Pepsi. I just don't like caffeine too late in the day as it makes difficult/restless getting to sleep and then the next day I have trouble getting up, etc.