Does mouthwash break a fast? Separating fact from fasting friction
                                
                                
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                                    4 min read                                
                            
                                According to research, fasting can reduce saliva production, potentially leading to bad breath and dry mouth. This raises a common question for those restricting calorie intake or observing religious periods: Does mouthwash break a fast? The answer largely depends on your fasting protocol, the mouthwash ingredients, and whether it's ingested.