How many calories in a 7 11 extra large Slurpee? Here's the truth
                                
                                
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                                    3 min read                                
                            
                                A 44-ounce extra large Slurpee can contain over 600 calories, primarily from sugar. Understanding precisely how many calories in a 7 11 extra large Slurpee is crucial for anyone monitoring their intake or trying to make more informed dietary choices.  While it's a popular frozen treat, its nutritional profile reveals why moderation is key.