How much quinine water should I drink a day? A comprehensive safety guide
                                
                                
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                                    4 min read                                
                            
                                The U.S. Food and Drug Administration (FDA) limits the quinine content in tonic water to no more than 83 milligrams per liter. This critical regulation provides the necessary context for understanding how much quinine water should I drink a day without concern, though moderation is always key.