Did Barq's Always Have Caffeine? Exploring the Root Beer's History
                                
                                
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                                    3 min read                                
                            
                                While most root beers are caffeine-free, a 12-ounce can of Barq's currently contains about 22 mg of caffeine. The question, 'Did Barq's always have caffeine?', reveals a surprising history of formula changes and regional variations, distinguishing it from traditional root beer recipes from its inception.