I am a physician who injured a tendon on the pinky side of the wrist, the extensor carpi ulnaris, several years ago snowboarding. The wrist never hurt but remain inflamed and caused a neuropathy that never resolved. I did extensive research and tried several modalities: physical therapy, eccentric strengthening, prolotherapy and platelet-rich plasma injections. Despite that, the neuropathy remained and was driving me insane. As a last resort I purchased the Tendlite. After 1 treatment the neuropathy subsided and after 1 week it resolved completely. I COULDN'T BELIEVE IT! I still use the Tendlite after strenuous activity but do need to use on a regular basis. If you suffer from tendinitis for more than a month it's more likely chronic degeneration or tendinosis. I highly recommend the product. It's well made and comes with a money back guarantee. In addition, the company welcomes feedback and seems genuinely interested in your pain relief.