This is a very good site to read for a clear understanding of what GERD is.
I did use the orange peel extract when I was trying to heal my esophagus (I found it in Whole Foods but probably available in health food stores). I don't know if it helped me since I used so many types of natural supplements (be careful when you do use many new treatments especially if you have allergies or have other health problems, they can interfere with medications). I really do believe I healed myself by being on a mostly alkaline diet, sleeping on my left side, using DGL licorice - 20 minutes before each meal to coat the esophagus. Hope everyone can find the solution to healing themselves. You have to be really consistent, it's not easy, there really is no such thing as eating in restaurants, but the result is great. You will be healthy.