Hi,
Have you tried Gaviscon Advance from England? It is sold on Amazon and EBay. It has to be the Advance not the regular Gaviscon sold in the US. It has sodium aliginate in it that creates a raft that will stop pepsin and or acid from coming up. It is not a cure just a bandaid but it does provide temporary relief. Also talk to your ENT about hypersensitivity of the nerves. I know that may sound weird but I’m finding out that that may be part of my problem. I’m going to a pharalarengologist on June 9th.