My dentist suggested that when I come in for my crown to get NO2. That's why I'm going to try it. Last year I had a procedure done & the doc prescribed vicodin. I've taken vicodin before a long time ago, but it didn't help. Come to find out I'm allergic to it. No wonder it didn't work before. Oops. Demerol.. ah now that's good stuff. :D But Aleve is da bomb.