I have had this happen to me numerous times. Each time I think I am going to die. It is hard to know what will trigger it. I suggest Gaviscon to anyone who gets and episode. I take Acifex, because my insurance won't pay for Nexium. However, if you have a lot of acid already in your stomach, I think you need something to calm the acid instantly. I hav to laugh when I read people are scared to go to sleep. That is why I am up now. My reflux sometimes makes my throat swell. Tonight was one of those nights, so i am trying to keep myself awake.