I have gastric reflux and my husband snores. I thought I'd give it a try. It took a few days to adjust to, but it wasn't as difficult as I thought. I can't say that it does what it purports to do. His snoring is occasional, and still happens and I can't be certain about my GERD since it happens not based on my sleeping. However, it seems to not be harmful, and it puts a different slant on things.