I had (have?) this, too. I went to my doctor because I was clearing my throat all the time. This was the diagnosis. This actually scares me, because I believe it's likely (I'm not a Dr, so this is a guess) that having silent reflux for a long period of time could cause esophageal cancer.

I understand there's lots of caution in this thread about about this paper/post. It's definitely worth a try and it seems like there couldn't be much of a downside.