HI, I don't really have any advice but want you to know, you are not alone in this. I guess if I was going to give any advice is to try another type of med. I couldn't take Prevacid so they switched me to Aciphex and it works great.
It's not good to go too long with acid coming up into your throat...you can do alot of damage to your esophagus. Many people suggest a change in diet, which works for alot of people but it takes several works to see results. It didn't seem to help me so for now I'm sticking with the meds.