I found it interesting I went to a pharmacy and asked for biotene spray cause I found when I went out walking just water wasn't cutting it my mouth got so dry anyway he didn't even know what I was talking about. Yet I went to my normal pharmacy and she knew exactly what I wanted. This other glycerin and water now I will have to check that out cause the spray was expensive. I also asked the first pharmacist about difference biotine mouth wash and other mouth wash and he was speechless as well...