Don't use peroxide it mixes with the gastric juices and can damage your esophagus!
I'm prone to mouth sores due to my Lupus and my doctors have me rinse my mouth out with warm salt water. Another lady on the Lupus site gargles with a teaspoon of rum. She says it burns like crazy at first but then it numbs it for a few hours.
If you have very sensitive teeth you can get something like pronamel or sensodyne. Alcohol free mouthwash will feel the best for your sore mouth.
Are you seeing a dentist regularly? They can fix any cavities you may develop from the GERD. They also can give you a perscription toothpaste if you need it.
Lupus, Fibromyalgia, Glaucoma, Asthma, Hypothyriodism, Sleep Apnea, OA, Depression, and Allergies
When life throws you lemons....
Pick them up and throw them right back at them! :))