I have been dealing with [pain in] lower back for over 18 months. After a week with RTPR, my pain is almost entirely [relieved]. I felt better after just the first two days. I simply can't believe that a topical pain reliever could have such an effect. Unlike some of the other sprays I've tried, which just give me a short-lived cooling effect, RTPR is having a lasting effect that is speeding my own natural healing process. I couldn't be happier -- and I am not easy to please. THIS STUFF WORKS!! I only wish I'd known about it a year ago!!