My Rheumatologist gave me script for Flector patches to help with pain in my back. I have to say, it did help as long as it would stay on. I soon learned that taping it to the area helped to secure it. But then you have to be careful of which tape to use if you are prone to allergic reactions from the adhesive in the tape. From experience, I recommend a white, medical paper tape.
Hope this was helpful.