When most people choose a diet soda over a regular one, they are doing it for their waistline. In other words, they are only paying attention to the zero or low calorie number. Very rarely are they looking at the caffeine content.If you are watching your caffeine intake, it's worth noting that most diet versions of their regular counterparts contain more caffeine. Though it's not the highest content among all diet drinks, Diet Coke has 30% more caffeine that regular Coke! To get an idea of how much of a difference there is, and to see how the diet sodas stack up against each other, Diet Blog has put together a list of the 10 Most Caffeinated Diet Drinks. Number one? Pepsi Max, with 69 mg of caffeine. As a reference point, 1 tsp of instant coffee powder has 57 mg of caffeine.
Of course, if you're "dieting," then you might actually appreciate that extra caffeine.