Flexotone Reviews - I've been dealing with back pain for years. I've tried everything to get rid of it. I'm not a big fan of taking medicine, so when I heard about Flexotone, I decided to give it a shot. It claims to be a non-invasive treatment that has no side effects. It's available in the form of patches that you stick on your back or in the form of a lotion or spray that you rub on your back.