My experience with the GERD/bad breath problem began with a liver issue. It was really bad! After trying several remedies, I found the Closys brand mouthwash about the time I received some medical attention. I credit both for the improvement, but I am never without Closys. Another benefit of Closys is that you can choose between mint or no taste at all, almost like water. Since I am allergic to mint, that is a bonus for me. And it has really worked well for me.