Is Tonic Water Safe to Drink by Itself? A Look at Quinine and Sugar
                                
                                
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                                    4 min read                                
                            
                                Did you know that a standard 12-ounce serving of regular tonic water can contain around 32 grams of sugar? This high sugar content is a primary consideration when evaluating if tonic water is safe to drink by itself and how it compares to other beverages.