Does Coke Zero or Diet Coke Have Less Caffeine?
                                
                                
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                                    3 min read                                
                            
                                According to the Coca-Cola Company, a standard 12-ounce can of Diet Coke contains 46 milligrams of caffeine, while the same size can of Coke Zero has 34 milligrams. This difference is significant for individuals monitoring their caffeine intake and illustrates one of the key nutritional distinctions between the two popular beverages.