I often have nausea accompanied by difficulty swallowing and dry mouth. This has gone on for years. Multiple endoscopies show reflux.

Reflux and dry mouth. You said that you have been diagnoses with reflux. Many of the medication can cause dry mouth, which can cause serious oral problems. Without saliva it can be hard to swallow and your teeth are at high risk for decay. Your dentist can help you with the dry mouth symptoms. There are OTC products like Biotene products that can help your mouth feel better. Your dentist may recommend fluoride.
Not normal. Ok if endoscopy showed reflux , are you. Taking recomended medication?