Some people may notice that certain foods and even water may taste different after first using TheraBreath products. This is most likely because of a highly acidic oral environment. TheraBreath is pH Neutral, meaning that it neutralizes excess oral acids. This change is what is causing the change in taste perception. The good news is that this is a sign that TheraBreath is working, and the change in taste perception is only temporary. Typically within a week of first use your sense of taste will return to normal as your mouth acclimates to its new, less acidic oral environment.