Another major difference between Diet Coke and Coke Zero, Sharp points out, is caffeine content. A 12-ounce can of Diet Coke has about 46 milligrams, while Coke Zero has 34 milligrams.

Coke Zero: Uses a combination of aspartame and acesulfame potassium as sweeteners. It also contains natural flavors, carbonated water, caramel color, phosphoric acid, and caffeine. Diet Coke ...

It turns out that the caffeine and carbonation in Coca-Cola may help your migraine pain. Skip to main content. ... which is found in Diet Coke and Coke Zero, can also trigger migraines.

Coke Zero and Diet Coke are go-to options for soda lovers who want to cut the sugar but not the fizz. But wait a minute — they’re both zero-calorie, both from Coca-Cola, and both claim to ...