I found they get worse after eating chocolate or peppermint, or drinking anything, including water, tea, or sodas. I'm on Ranitidine
twice daily, recently having switched from Avelide, both for heartburn, but neither one helps. In the past, I've also been on Nexium, which didn't help. When I get these episodes (which is almost constant anymore!) I usually also have a burning sensation in my throat, and sometimes acid comes up to where I taste it, and that is NOT pleasant!