Salanpas Pain Relieving Patch worked wonders for my excruciating pain in my back. I first heard about these from a friend who has fibermyalga and she swears by them. They have really helped with any sore spots I get, not just my back. Although I do have to say that my skin is a little red after I removed the patch. It was almost as if it was kind of sun burned. But it didn’t matter because the pain relief that I got was worth it. I highly recommend Salanpas Pain Relieving Patches for anyone who has pain, especially back, neck or shoulder pain.