Does Diet A&W Root Beer Have Aspartame in It?
                                
                                
                                •
                                
                                
                        
                                    
                                    4 min read                                
                            
                                According to the ingredient list on product labels, Diet A&W Root Beer—now known as A&W Zero Sugar—does contain the artificial sweetener aspartame. The reformulation from 'Diet' to 'Zero Sugar' was a branding change, not an ingredient overhaul, and the beverage continues to use a blend of sweeteners to achieve its classic flavor without sugar. This blend typically includes both aspartame and acesulfame potassium.