How many calories are in diet lemonade? The surprising truth
                                
                                
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                                    2 min read                                
                            
                                Many commercial diet lemonades contain as few as 2-5 calories per 250ml serving, with a negligible amount of sugar. For those monitoring their calorie intake, understanding how many calories are in diet lemonade reveals it as a very low-energy alternative to sugary beverages.