This is my first review, but I've got to say, this works really well for lower back pain. I was massaging it on my lower back because I started getting back pain from lifting weights. It was working pretty good, but a friend told me that I should put it under my tongue instead. My back feels so much better now. I'm not using Motrin at all anymore. My only gripe is that I would recommend putting instructions in the box, so people know different ways it can be used.