What light sodas have caffeine? A guide to sugar-free options
                                
                                
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                                    3 min read                                
                            
                                According to the Center for Science in the Public Interest, a 12 oz can of Diet Mountain Dew contains approximately 54 mg of caffeine, surprisingly similar to its regular counterpart. For those monitoring their stimulant intake, knowing what light sodas have caffeine is critical, as the presence of sugar is not the only differentiator among these popular drinks.