Diclofenac
"I have suffered from Rotator Cuff pain along with mid back spasms radiating into the lower back. I've used Lidocaine patches, pain management trigger point injections, and acupuncture. When my PA handed me 2 tubes of this gel, I didn't have much hope for it. Within minutes of applying as directed, not only was my pain gone, but so was the muscle stiffness! I urge you to try it!"