What is the main ingredient in Dr Pepper soda?
                                
                                
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                                    3 min read                                
                            
                                Dr Pepper, first sold in 1885, is older than Coca-Cola, but its iconic flavor remains a well-guarded secret. So, what is the main ingredient in Dr Pepper soda? The primary base is carbonated water, which provides the effervescence, while the distinct flavor comes from a proprietary blend of 23 different natural and artificial flavors.