Caffeine Content. Both Diet Coke and Coke Zero Sugar contain caffeine unless you opt for their caffeine-free versions. Diet ...

The fact is, caffeine-free Diet Coke is the coward’s way. If you are a ride-or-die Diet Cokehead, you understand that the only acceptable version of Diet Coke is the classic variety, perfect ...

A can of regular Coke has 34 milligrams of caffeine, compared to a can of Diet Coke’s 46 mg. The more caffeine one drinks, the more of a dependency the body builds to it.

Chemical Romance — The Sweet Science. Now let's talk about the ingredients that keep people coming back. Each 12-ounce can of Diet Coke contains about 46mg of caffeine—more than regular Coke ...